Poor performance on Trainz Simulator 2

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  Recently, I updated to Firefox 27 and noticed really horrible performance (Manager tasks indicates FF connecting a carrot, frequent "Firefox is not responding messages", even strikes in late development in the URL bar). It's on an Ideapad s205 (AMD E450 APU, Win 7 x 64, 8 GB RAM, SSD) who has always had pretty decent web browsing performance for a low end machine.

  At first, I blamed FF because poor performance coincided with the update to version 27, but now I think that the first cause to be a recent Microsoft Update. The reason is that my wife has a laptop with a same low-end APU (APU C60, hard drive 5400 RPM, 4 GB of RAM, Win 7 x 64), and she was getting much better performance with FF27 until I applied a backlog of some 90 + updates. Now she suffers from the same poor performance I am and she is pretty p * ssed at home.

  Interestingly, I have two WIn 7 x 64 Intel computers to office who have 27 FF and are fully patched, and performance are very good. Maybe this problem is specific to AMD APU.

  Any thoughts? I tried to turn off the backend Azure with some comments in this forum, but makes little or no difference.

  Thank you!

  Success! 32 FF seems to have solved my problems of performance. Thank you!

• Did someone using Trainz Simulator 2 on Mac mini 2014?

  I have a new Mac mini with Intel 5000 graphics card, 16 Gig memory.  Does anyone know if Trainz Simulator 2 will run on my computer?

  What does the list of developers and system requirements?

• HP Mini 110-3530NR extremely poor performance on the Internet

  My HP Mini 110-3530NR Netbook has very poor performance on the Internet.  I use Windows 7 Starter.

  Say hello to new coppens1.  I apologize for the delay in my responses.  I have not received the normal e-mail notifications.

  When I had to go to msconfig earlier in our interactions you make sure that the Synaptics driver load with Windows?  Follow these steps to check.

  1. Click Start, type "msconfig" and press ENTER.
  2. Go to the Services tab and search for "HP Software Framework".  This should load with Windows for a lot of the HP software to work properly.
  3. Then go to the Startup tab and make sure that anything it either by "Synaptic" is loaded with Windows.
  4. Save your changes and exit msconfig.
  5. Then go to your touchpad settings and, even once, make sure that the settings are correct.
  6. Finally, restart the machine and make sure it works properly.

  I totally understand if you want to open a new thread as this covered a few topics!  Just make sure to send me a private message with the link so that I can make sure to help you here.

  I wish you a beautiful day JC!

• SG300 switches have poor performance in layer 3?

  We have several switches SG300 Serices. We use them to route traffic to VLAN remote offices, the Internet connections and wireless access Points.

  In a remote office, we have a SG300-10 facility to route the HQ network and the remote office subnet. The SG300 is connected to the seat through fiber and contains several VLAN Tag. If I speed, tests on the fiber of the entrants Netwotk tag link I get decent performance, 80Mbs. If I switch to a networtk who is not priginating of the central administration and road SG300-10 package, I get poor performance. 15 - 20Mbs.

  I have Fireded until a new FW SG300 - 28 p v1.2.7.76. Added a HQ VLAN 101 and VLAN new, 1025. Mapped some Tagged and not marked for each ports.  Switch has been connected to the network of HQ as untagged VLAN 101.  I put a laptop on a unmarked port VLAN 101. Ran some tests, cam is back with 750-850Mbs. great.  Put the same computer laptop on a Port of 101 tag, set the NETWORK card for tag VLAN 101, same test, same speed, 750-850Mbs.

  I configured then laptop for tag VLAN 1025. Connected to the port 1025 VLAN scored. Done speed tests, the results were 15-20Mbs!

  Then I configured laptop for Untagged VLAN 1025. Connected to unagged port 1025 VLAN. Done speed tests, the results were 15-20Mbs!

  It was only the laptop and connect to the net on the SG300 - 28 p P.C. Why this device's performance is so poor when he needs to route?

  Other switches have v1.0.0.27 FW or FW v1.1.2.0. They have similar speed problems. All configured for layer 3.

  Thank you!

  Scott<>

  How are customer gateways and server configured?

  The default gateway for connecting devices should probably be that of the IVS, they are directly connected to. So if you have a server connecting to a SVI 192.168.1.100 then the gateway server should be 192.168.1.100, not a router upstream. Who can create a loop of road if the return circulation.

  -Tom
  Please mark replied messages useful

• VPN poor Performance - Cisco RV220W and routers WRVS4400N

  Hello

  To one of our customer IPSec VPN is established between Cisco RV 220W and routers of Cisco WRVS4400N.

  Router VPN /ISP details are as below

  Location was	Location B
  Details of the Internet ---------------------- DOWNLOAD: 6 to 10 Mbps Upload: 1 to 2 Mbps Details of router ---------------------- Cisco RV220W Firmware: 1.0.3.5 IKE policy Encryption: 3DES Authentication: MD5 Group: Group 2 Life key: 28800 sec VPN strategy Encryption: 3DES Authentication: SHA - 1 Group: 1024 bits (Group 2) Life key: 3 600 s Perfect Forward Secrecy: enabled	Details of the Internet ------------------------- DOWNLOAD: 1.35 Mbps Upload: 1.24 Mbps Details of router ---------------------- Cisco WRVS4400N Firmware version: V2.0.1.3 Phase 1 Encryption: 3DES Authentication: MD5 Group: 1024 bits (Group 2) Life key: 28800 sec Phase 2 Encryption: 3DES Authentication: SHA - 1 Group: 1024 bits (Group 2) Life key: 3 600 s Perfect Forward Secrecy: enabled

  From the day that VPN has been implemented, the performance was poor. Frequent disconnections sessions live to the VPN nodes and very low transfer rate was alarming to users.

  The servers in A location and users to the site B gets authenticated at the server DC level in A location

  Applications of Terminal Server remote as Quickbooks, QQ Evolution, attendance RX serve also the location has by users to the location B

  The login is your time and all applications are extremely slow.

  I tried to copy files between share data between two locations and the results are as follows

  Location A to location B-> 130 Kbps 140 Kbps

  Location location B A-> 150 Kbps to 160 Kbps

  What can be the problem for these poor performance VPN?

  -Change the encryption for the least secure OF THE /MD5 would have a significant impact because it can reduce the overload on the routers?

  -Even if both routers are routers SMB, it has really good VPN flow according to the data sheets. I couldn't find VPN flow mentioned in the WRVS4400N data sheet. One of the sons of CSC, I also noticed the VPN of WRVS4400N flow seemed really low as only about 1.6Mbps. (https://supportforums.cisco.com/thread/2107881)  Whereas RV220W router has VPN 90Mbps flow, according to the datasheet.

  So, what can be the cause of the problem and what can be fixes possible?

  Help, please!

  ANUP sisi

  Beginner to router Cisco VPN, please help

  RVS4000 was designed to work in a small office. It supports 5 VPN tunnels with a maxium of 2 Mbps flow measured in a laboratory environment. It has a processor that has a motor integrated IPS, who would deliver 20 Mbps LAN - WAN throughput when IPS is enabled.

  RV220W has been designed to operate in a slightly larger office with 25 IPsec VPN tunnels. It has a processor that has a built-in cryptographic engine able to deliver throughput 90 Mbps of IPsec. RV220W also supports 5 SSL VPN tunnels that can be used by employees and business partners for remote access.

• Poor performance Alienware 13

  Hello, I have recently updated my Asus G55VW to 13 Alienware and he's surprisingly poor performance in some games from my old laptop. As far as I know that I put everything to max performance but it is still low in some areas.

  Old sheet

  Intel i7 @ 2.5 GHz to 3.4 GHz

  NVIDIA geforce 660 m

  8 GB ram

  Alienware 13

  Processor Intel i5 1.7 GHz to 2.7 GHz

  NVIDIA geforce 860 m

  8 GB ram

  So far, Borderlands 2 runs poor while others like Warframe can operate at max settings no problem.  Other games like naruto shippuden ultimate ninja storm 3 full bursting cannot run because it selects only the integrated graphics card and I can not change... Right now, I think that the graphics card integrated into the issue and if there is a way to disable it, which could make things much better. Not to mention that any help to increase performance would be greatly appreciated.

  JLM264

  Alienware 13

  Processor Intel i5 1.7 GHz to 2.7 GHz

  You have a 1.7 GHZ dual core CPU... Borderlands 2 recommends the use of 2.4 GHZ quad core CPU

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  I have my InternetExplorer9 on a clean Windows7 VM thinapped and have Veery poor performance when I run the finished app.
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  -J' put 'AutoStartServices = 0' in the Package.ini generating

  -J' put 'NetRelaunch = 0' and 'AutoStartServices = 0' in the Package.ini.

  -J' set the sandbox sand-path %appdata%\microsoft\windows\sendto and the local path (tried both)

  -J' deleted some unnecessary user-specific folders in the project path

  -J' got only InternetExplorer.exe as entry point

  I tried the last few steps of each constellation, but no finished package is better than the others. You have any other suggestions for

  My problem? (I use the Thinapp_4.7.2 by the way)

  Kind regards

  Tobias

  It doesn't matter as long as it is in the right section:

  [Compression]

  CompressionType = None

  [Segregation]

  DirectoryIsolationMode = merged

  [BuildOptions]

  OptimizeFor = mΘmoire

  DisableTransactionRegistry = 1

  I forgot to mention it, but there was a new feature of Internet Explorer 9: hardware acceleration.

  Change IE9 to disable hardware acceleration has helped me get better performance in my VDI environments.

  See:

  http://support.Microsoft.com/kb/2528233

  Go to Internet Options, advanced, check ""use the software instead of GPU rendering rendering "."

  Recover application or use sbmerge to update your project file.

  
  

• disc Flash of poor performance

  Hello
  When I run $cellcli EI list physical disk, some of the Flash drive is showing a poor performance.
  
  
  alprod1st09: FLASH_5_0 1116M08EUW poor performance
  alprod1st09: there is no such thing as FLASH_5_1 1116M08EV9
  alprod1st09: FLASH_5_2 1116M08EVA poor performance
  alprod1st09: FLASH_5_3 1116M08EVC poor performance
  
  is it requires to call oracle for the replacement of flash drive... it is very critical?
  Kind regards
  ANI

  One of your flash cards shows also absent I would suggest contact you oracle for a glance. You are on the last cell server software? There used to be a problem that caused problems with the pci riser cards. It is fixed in the latest software drivers.

• Android apps have poor performance

  I have several applications created for Android and all my folios seem poor performance on android devices. It takes a long time for any article to focus on the text (all sheets are built using PDF), and there is a significant for interactivity in a Folio delay, if it does not crash the app entirely. Has anyone else had problems with Android apps? I have not read a lot of useful information on them.

  All my applications are built for android with the dimensions of 2048 x 1536 to make them readable on the Nexus-10. All applications have been rebuilt with v27 and PDFS.

  I'd appreciate comments you can give.

  Thank you

  One thing that can help with the Active Viewer is to design to a smaller size (1024 x 768, for example), use a PDF object and the viewer intensify folios to fit larger screens. Put scale up to adjustment is supported in our 28 Viewer version of AIR and it makes a big difference in performance while maintaining the reasonable quality of the assets.

  Neil

• Poor performance and balloon - do you think I have to take my iMac for repairs at the Apple Genius Bar?

  Here is a copy of my EtreCheck - can anyone suggest why my iMac is so slow and swelling?  Do you think I need to take it to an Apple store for repair?
  

  
  

  EtreCheck version: 2.9.9 (260)

  Report generated 2016-03-06 18:39:15

  Download EtreCheck from https://etrecheck.com

  Duration 14:09

  Performance: Poor

  Click the [Support] links to help with non-Apple products.

  Click [details] for more information on this line.

  Problem: Beachballing

  Hardware Information: ⓘ

  iMac (21.5 inch, mid 2011)

  [Data sheet] - [User Guide] - [warranty & Service]

  iMac - model: iMac12, 1

  1 2.7 GHz Intel Core i5 CPU: 4 strands

  12 GB of RAM expandable - [Instructions]

  BANK 0/DIMM0

  OK 4 GB DDR3 1067 MHz

  BANK 1/DIMM0

  OK 4 GB DDR3 1067 MHz

  0/DIMM1 BANK

  OK 2 GB DDR3 1067 MHz

  BANK 1/DIMM1

  OK 2 GB DDR3 1067 MHz

  Bluetooth: Old - transfer/Airdrop2 not supported

  Wireless: en1: 802.11 a/b/g/n

  Video information: ⓘ

  AMD Radeon HD 6770M - VRAM: 512 MB

  iMac, 1920 x 1080

  Software: ⓘ

  OS X El Capitan 10.11.3 (15 d 21) - since startup time: less than an hour

  Disc information: ⓘ

  ST31000528AS disk0: (1 TB) (rotation)

  EFI (disk0s1) < not mounted >: 210 MB

  Macintosh HD (disk0s2) /: 999,35 go-go (728,33 free) - 9 errors

  Drive failure!

  Recovery HD (disk0s3) < not mounted > [recovery]: 650 MB

  HL-DT-STDVDRW GA32N)

  USB information: ⓘ

  Computer, Inc. Apple IR receiver.

  Card reader Apple

  Apple Inc. FaceTime HD camera (built-in)

  Seagate Expansion Desk 4TB

  EFI (disk1s1) < not mounted >: 315 MB

  Time Machine (disk1s2) Volumes/Time Machine: 4,00 (2.05-free) tuberculosis

  Apple Inc. BRCM2046 hub.

  Apple Inc. Bluetooth USB host controller.

  Lightning information: ⓘ

  Apple Inc. Thunderbolt_bus.

  Configuration files: ⓘ

  /etc/sysctl.conf - file exists but not expected

  Guardian: ⓘ

  Any where

  Kernel extensions: ⓘ

  / Library/Extensions

  com [loading]. Perfect.Driver.SystemAudioRecorder (1.0.0 - SDK 10.9-2016-02-29) [Support]

  / System/Library/Extensions

  com.wdc.driver.1394HP [no charge] (1.0.9 - 2016-02-29) [Support]

  com.wdc.driver.USBHP [no charge] (1.0.11 - 2016-02-29) [Support]

  Launch system officers: ⓘ

  [loaded] 7 tasks Apple

  [loading] 157 tasks Apple

  [operation] 72 tasks Apple

  Launch system demons: ⓘ

  [loaded] 41 tasks Apple

  [loading] 154 tasks Apple

  [operation] 93 tasks Apple

  Launch officers: ⓘ

  [operation] com.avg.Antivirus.gui.plist (2015-05-06) [Support]

  [operation] com.brother.LOGINserver.plist (2014-11-21) [Support]

  [loading] com.google.keystone.agent.plist (2016-03-03) [Support]

  [operation] com.mcafee.menulet.plist (2015-09-13) [Support]

  [operation] com.mcafee.reporter.plist (2015-09-13) [Support]

  [loading] com.oracle.java.Java - Updater.plist (2014-04-13) [Support]

  Launch demons: ⓘ

  [loading] com.adobe.fpsaud.plist (2016-01-29) [Support]

  [loading] com.avg.Antivirus.crashpad.plist (2015-09-16) [Support]

  [operation] com.avg.Antivirus.infosd.plist (2015-05-06) [Support]

  [operation] com.avg.Antivirus.services.plist (2015-05-06) [Support]

  [loading] com.cyberghostsrl.CyberghostPrivilegedHelper.plist (2015-04-15) [Support]

  [loading] com.google.keystone.daemon.plist (2016-03-03) [Support]

  [loading] com.malwarebytes.MBAMHelperTool.plist (2016-02-24) [Support]

  com.mcafee.ssm.ScanFactory.plist [no charge] (2015-09-09) [Support]

  com.mcafee.ssm.ScanManager.plist [no charge] (2015-09-09) [Support]

  [operation] com.mcafee.virusscan.fmpd.plist (2015-09-13) [Support]

  [loading] com.microsoft.office.licensing.helper.plist (2011-03-10) [Support]

  [loading] com.oracle.java.Helper - Tool.plist (2014-04-13) [Support]

  User launch officers: ⓘ

  [operation] com.nchsoftware.expressaccounts.agent.plist (06 / 06/2012) [Support]

  [operation] com.spotify.webhelper.plist (2016-01-22) [Support]

  org.VirtualBox.vboxwebsrv.plist [no charge] (2015-01-21) [Support]

  Items in user login: ⓘ

  None

  Other applications: ⓘ

  [ongoing] com.brother.utility.NETserver.31072

  [ongoing] com.brother.utility.USBserver.88032

  [ongoing] com.etresoft.EtreCheck.80992

  [ongoing] com.mcafee.ssm.ScanManager

  [ongoing] com.mcafee.virusscan.ssm.ScanFactory

  [loading] 392 tasks Apple

  [operation] 190 tasks Apple

  Plug-ins Internet: ⓘ

  Flip4Mac WMV Plugin: 3.2.0.16 - SDK 10.8 (2013-11-25) [Support]

  FlashPlayer - 10.6: 20.0.0.306 - SDK 10.6 (2016-02-10) [Support]

  QuickTime Plugin: 7.7.3 (2016-01-20)

  Flash Player: 20.0.0.306 - SDK 10.6 (2016-02-10) [Support]

  EPPEX plugin: 10.0 (2012-05-25) [Support]

  Default browser: 601 - SDK 10.11 (2016-01-20)

  npmcafee: 2.0.15 (2014-07-23) [Support]

  SharePointBrowserPlugin: 14.4.8 - SDK 10.6 (2015-03-25) [Support]

  SiteAdvisor: 2.0 - 10.1 SDK (2015-03-30) [Support]

  JavaAppletPlugin: Java 8 73 build 02 update (07-02-2016) check the version of

  User Plug-ins internet: ⓘ

  Web of Google Earth plugin: 6.2 (2012-06-29) [Support]

  Safari extensions: ⓘ

  AdBlock (2016-02-17)

  Clipper OneNote (2016-03-06)

  SiteAdvisor (2016-02-17)

  3rd party preference panes: ⓘ

  Flash Player (2016-01-29) [Support]

  Flip4Mac WMV (2013-11-25) [Support]

  Java (2016-02-07) [Support]

  Time Machine: ⓘ

  Skip system files: No.

  Mobile backups: OFF

  Automatic backup: YES

  Volumes to back up:

  Macintosh HD: Disc size: 999,35 GB disc used: 271,01 GB

  Destinations:

  Time Machine [Local]

  Total size: 4,00 TB

  Total number of backups: 61

  An older backup: 30/08/2015, 02:52

  Last backup: 06 03, 2016, 15:31

  Size of backup drive: Excellent

  Size of backup 4,00 TB > (disk size 999,35 GB X 3)

  Top of page process CPU: ⓘ

  74% com.apple.WebKit.Plugin.64

  6% WindowServer

  3% kernel_task

  coreaudiod 2%

  1% avgscand

  Top of page process of memory: ⓘ

  Kernel_task 799 MB

  455 MB softwareupdated

  270 MB Safari

  Com.apple.WebKit.WebContent 258 MB

  Com.apple.WebKit.Plugin.64 246 MB

  Virtual memory information: ⓘ

  3.00 GB RAM free

  8.99 used GB RAM (6,64 GB being cached)

  Used Swap 0 B

  Diagnostic information: ⓘ

  6 March 2016, 18:10:06 self-test - spent

  You must uninstall the anti virus software that you have installed and it seems that your hard drive has failed. You must make an appointment and bring it into service.

  Seriously, get rid of the AV software, it of doing nothing but slow down your mac.

• Poor performance wireless on Qosmio X 500 - 134

  I just bought a Toshiba Qosmio x 500-134, and there is one thing that bothers me. The wireless connection is very poor.
  HE can say that I am very disappointed with it. I had a model x 205-sli1 front and the Wi - Fi connection was top.

  Why x 500 is so poor?

  What do you mean with the poor? Slow or what?

  Who knows what you do, what WLAN settings that you use and how test you the performance of WLAN.

• EA6400 poor performance of 2.4 ghz

  Hi guys

  I just bought this linksys EA6400 (ac1600) the router and im having a lot of trouble with her

  im getting the power of the signal very poor and poor networkspeed on speedtest.net because of this

  Ive got 100/10 cable, but wireless 2.4 ghz (ive not yet 5 GHz of adapters) im only get 10mbits on speedtest and sometimes worst way only 5mbits and its only 4 meters (13 feet) away (2/5 bars signal strength on my devices)

  im getting the same or better performance with my old router e1000

  what I tried:

  -The routers to the latest version firmware update

  -updated drivers on PCs and laptops in my area

  -tried other channels 2,4 ghz with no luck at all im getting worse performance on 1.6 and 11 if I leave it in the car, it is the best

  -ive tried to disable the transfer of cutting hollow

  -adjust the width of the channel to only 20 mhz

  -n only wireless network mode

  -factory reset

  -priority implementation of media

  all this he has not improved

  My settings for the moment:

  -all on the car to 2.4 ghz page

  -no priority media

  -rest of my settings are auto adjustment

  What should I do? return the router for an asus router or something?

  any help would be appreciated

  5 GHz is no choice because my pc, the laptop and the phone does not support the 2.4 ghz I will modernize the PC and laptop adapters CA / CC 5 GHz

  my phone should be ok, but I think my older e1000 router was acually better at 2.4 ghz

  Thank you very much

  Jochem

  What Protocol (b/g/n) wireless devices are connecting to the EA6400 with?

  In the connection status of the client devices window, which is listed as the connection speed (54 Mbps, 150mbps, etc.)?

  The link below has some good information about the wireless channel width:

  FAQ of SmallNetBuilder Wireless: the essential

  This article does not take into account changes to the rule of co-existence 20 Mhz Wireless. Essentially if a 20 Mhz signal is detected by the router in the range of 2.4 Ghz router is to drop her at 20 Mhz channel width, which will reduce speeds in two.

  The best solution is to upgrade the client machines to 5 GHz.

  Other things to try:

  1. Support WMM Enable\Disable (I recommend it be enabled if no improvement is noticed with this option disabled)
  2. Activate Media prioritization with a parameter to 100000 Kbps downstream bandwidth and keep all devices\apps to normal priority to start
  3. Only use WPA2 Personal wireless security
  4. Set the Protocol Wireless 2.4 Ghz "N only.

• Poor performance when multitasking on T510 Core i5, Windows 7 64, 4 GB of RAM, NVidia Optimus 512 MB

  I am sadly disappointed with my new Lenovo performance and do not know what could be the cause.

  I just got a new T510 with Core i5, 4 GB of RAM and Windows 7 64 processor. When I run a few programs, such as Photoshop, Virtualbox (850 MB of RAM allocated), Google Chrome with a few tabs I'm stuck.

  It seems that 4 GB of memory is not enough for the work that I did on a 2GB machine a week ago.

  Response time of the computer is a couple of seconds for the window switching. New programs begin to count in a few minutes. Consumption of RAM reaches 98%, even if no single program is listed to consume more than 150 MB in the Manager of tasks or resource monitor. The effects Aero cool work, however, there no sloppiness in the graphical layer of the system.

  Even now, after killing of Virtualbox, remaining processes are up to 89% of the RAM in the resource manager.

  I'm working on the power running with power setting 'Performance', but I can hardly call it a performance.

  It's ridiculous, it was supposed to be a fast multitasking machine and turns out a load of scrap metal. I used to work on 2GB, 1.6 GHz Celeron with processor Intel GMA, had Ubuntu host and Guest Windows XP with 750MB of RAM allocated, plus a couple of tools for programming and never had such problems _on ordinary basis_.

  I plan to run a Ubuntu on this machine because I can't just work this way on Windows 7... I can't even kill a process easily because it takes forever to complete a process.

  A friend of mine runs similar configuration on a slower machine T410 with CPU and the poor graphics and he says it's really strange, because he never had this kind of problem. My PC is new, 4 days from arrival, its is like 2 months old.

  Everyone knows about the similar problem? What could be the cause?

  At this point, I have Chrome with about 10 tabs, Firefox empty, empty Photoshop, Pidgin and 3 Windows Explorer running, Adobe Reader with 1 paper and Sticky Notes. Consumption of RAM is 3495MB used (Yes), 113 and 276 MB free Eve.

  What's not here?

  Please see the attached screenshot:

  

  http://img715.imageshack.us/i/captureybh.PNG/

  Well, the problem is resolved. After removing delivered Norton Internet Security suite, run as plate gold.

  I'll take another antivirus software, then.

  Now, even with the operation of Virtualbox, I still like 2 GB of free RAM. And no lag, no slowdowns. Woohoo.

  * beep * you Norton!

• Poor performance Sound

  Hello world

  I experience for a new application, a sort of dj app. However, it seems that the performance of the Sound and the SoundChannel class on the PlayBook is extremely poor.

  I use the following code by André Michelle:

  package components
  {
      import flash.events.Event;
      import flash.events.SampleDataEvent;
      import flash.media.Sound;
      import flash.net.URLRequest;
      import flash.utils.ByteArray;
  
      /**
       * @author Andre Michelle ([email protected])
       */
      public class MP3Pitch
      {
          private const BLOCK_SIZE: int = 3072;
  
          private var _mp3: Sound;
          private var _sound: Sound;
  
          private var _target: ByteArray;
  
          private var _position: Number;
          private var _rate: Number;
  
          public function MP3Pitch( url: String )
          {
              _target = new ByteArray();
  
              _mp3 = new Sound();
              _mp3.addEventListener( Event.COMPLETE, complete );
              _mp3.load( new URLRequest( url ) );
  
              _position = 0.0;
              _rate = 1.0;
  
              _sound = new Sound();
              _sound.addEventListener( SampleDataEvent.SAMPLE_DATA, sampleData );
          }
  
          public function get rate(): Number
          {
              return _rate;
          }
  
          public function set rate( value: Number ): void
          {
              if( value < 0.0 )
                  value = 0;
  
              _rate = value;
          }
  
          private function complete( event: Event ): void
          {
              _sound.play();
          }
  
          private function sampleData( event: SampleDataEvent ): void
          {
              //-- REUSE INSTEAD OF RECREATION
              _target.position = 0;
  
              //-- SHORTCUT
              var data: ByteArray = event.data;
  
              var scaledBlockSize: Number = BLOCK_SIZE * _rate;
              var positionInt: int = _position;
              var alpha: Number = _position - positionInt;
  
              var positionTargetNum: Number = alpha;
              var positionTargetInt: int = -1;
  
              //-- COMPUTE NUMBER OF SAMPLES NEED TO PROCESS BLOCK (+2 FOR INTERPOLATION)
              var need: int = Math.ceil( scaledBlockSize ) + 2;
  
              //-- EXTRACT SAMPLES
              var read: int = _mp3.extract( _target, need, positionInt );
  
              var n: int = read == need ? BLOCK_SIZE : read / _rate;
  
              var l0: Number;
              var r0: Number;
              var l1: Number;
              var r1: Number;
  
              for( var i: int = 0 ; i < n ; ++i )
              {
                  //-- AVOID READING EQUAL SAMPLES, IF RATE < 1.0
                  if( int( positionTargetNum ) != positionTargetInt )
                  {
                      positionTargetInt = positionTargetNum;
  
                      //-- SET TARGET READ POSITION
                      _target.position = positionTargetInt << 3;
  
                      //-- READ TWO STEREO SAMPLES FOR LINEAR INTERPOLATION
                      l0 = _target.readFloat();
                      r0 = _target.readFloat();
  
                      l1 = _target.readFloat();
                      r1 = _target.readFloat();
                  }
  
                  //-- WRITE INTERPOLATED AMPLITUDES INTO STREAM
                  data.writeFloat( l0 + alpha * ( l1 - l0 ) );
                  data.writeFloat( r0 + alpha * ( r1 - r0 ) );
  
                  //-- INCREASE TARGET POSITION
                  positionTargetNum += _rate;
  
                  //-- INCREASE FRACTION AND CLAMP BETWEEN 0 AND 1
                  alpha += _rate;
                  while( alpha >= 1.0 ) --alpha;
              }
  
              //-- FILL REST OF STREAM WITH ZEROs
              if( i < BLOCK_SIZE )
              {
                  while( i < BLOCK_SIZE )
                  {
                      data.writeFloat( 0.0 );
                      data.writeFloat( 0.0 );
  
                      ++i;
                  }
              }
  
              //-- INCREASE SOUND POSITION
              _position += scaledBlockSize;
          }
      }
  }
  

  When I play a sound by using this method, it is extremely rough. However, this class is as simple as it can get, so I missed something? Or should I just give up on making this work on the PlayBook?

  Best regards

  I don't see anything explaining why the code is so complicated, instead of just letting the Sound object directly play the MP3 file.  Why all the SampleData stuff?

  Also, I've only skimmed it so far, but I see that block_size is hardcoded to 3072.  Why that value?  Have you tried others?  Depending on how much other work the code, it may simply not be generating as many samples per update (i.e. for each SampleDataEvent.SAMPLE_DATA) you should try to do it, then it 'get '.  Try at least 4096, or an even greater value if this is allowed... I vaguely remember 8192 is the maximum (although perhaps shared between the two channels).

  How long the event runs itself?  Try to add a measure of the time at the beginning and at the end of this routine to see if it takes much more time that you expect... and longer than the time available to it.