Slow download with WRT1200AC/SB6121 Modem/Comcast Internet speeds

I recently bought the router WRT 1200 AC to complete my wifi at home.  I also have a new laptop Windows 10.  When you are connected wireless network, I ran the test of speed of Comcast.  Results are usually the following:

IPv4 - 2 MB/s download, 5mbps download

IPv6 - 30 MB/s download, 6 Mbit/s upload

I also connected to my wireless on my laptop and run the OOKLA speedtest application.  With this app I usually get similar results to the IPv4 of the comcast speed test.  Sometimes I get the faster speeds of IPv6.

When I have a wired connection to the router I get download speeds of 30mbps.

My question is why can not I get slow speeds of download IPv4 and what can be done to improve the situation?

Thank you

Router and wired Configurations
Configuration DHCP reserved IP addresses for all devices ON the router. This ensures that each devices gets its own IP address when turned on and connected, eliminates conflicts of IP addresses and helps troubleshoot and maintain some consistency for applications that need to connect and mapped drives.
Make sure that the devices are configured automatically obtain an IP address.
Disable http://en.wikipedia.org/wiki/Ipv6 on the router, select Local connection only and test with IPv6 active. Re-enable after the test.
Disable the power management on the Ethernet on any PC or laptop

Speedtest test servers. Some servers may be busier than others.

Wireless configuration
Verify that the default SSID (linksys) is modified. To ensure that the different SSID names are used between each WiFi 2.4 / 5 GHz radios for dual-band routers. Can be anything and not something that is already used by the neighbouring WiFi routers.
What wireless modes do you use?
Try the mixed mode, single mode G or N or B/G/N, no joint 2.4 Ghz and single mode N or mixed on 5 GHz?
To activate the Protocol Router support AC AC wireless, you must have the below setting that is configured on the 5 GHz:
Wireless security: "WPA2 Personal" (not mixed)
Wireless protocol: 'mixed '.
Channel width: 'Auto '.
Width of the channel to Auto 20 / 40 Mhz or try 20 Mhz only.
Try to set a manual channel to a channel open or unused. 1, 6 or 11. 11 for Singlemode N if the channel is clear. 13 for the regions of the EU. Try the channel 48 or 149 on 5 Ghz. http://en.wikipedia.org/wiki/List_of_WLAN_channels
 http://KB.Linksys.com/Linksys/UKP.aspx?VW=1&docid=f2625b15a5d7454b8e7fafbe65d5aa63_4009.XML&PID=80&r...
Disable the WPS
What security mode are you using? Privilege 'egi' is 'WPA2 Personal"(not mixed). http://KB.Linksys.com/Linksys/UKP.aspx?VW=1&docid=8ce9e83bd3784001aee72da7f1ef48e8_Changing_the_basi...
 http://KB.Linksys.com/Linksys/UKP.aspx?pid=80&VW=1&articleid=19073
What wireless devices you have connected?
Ensure that all devices with WiFi card drivers are updated.
Home Wireless 2.4 Ghz or 5 GHz or WiFi APs phones around?
Any other WiFi router in the region? Link > http://www.techspot.com/downloads/5936-inssider.html allows to discover. Use v3. How many?
WMM support must be enabled for single mode N Wireless work.
 http://KB.Linksys.com/Linksys/UKP.aspx?VW=1&articleid=5471

Tags: Linksys Routers

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