WiFi (slow connection on 802.11ac) subjects with 10.11.3

My Macbook is connected to a router TP - Link Archer C7 on 802.11ac v02 (5 GHz). Sitting next to the router speed is between 800 and 900 Mbps.

First I had problems after wake her from her sleep. Speed has fallen to 7 Mbps. After toggling wifi turned off/lit, speed was normal.

Now, I've upgraded to 10.11.3. At the start speed is between 29 and 59 Mbps. sometimes it gets easier, but maximum is of 400 Mbps.

I tried:

-Reboot everything

-Removed Wifi config/service

-Static IP, DNS, IP v04/v06, MTU

-Various parameters of the router

-/ Library/Preferences/SystemConfiguration deleted

-Reset the PRAM/SMC

RSSI:-50dBm, noise:-83 dBm

If I boot in safe mode, all right. Normal speed to 900 MBit/s. No problem with sleep, etc., but only in safe mode!

Any suggestions?

You may have installed a third-party application that claims to provide anti virus, protection, management, firewall, cleaning, etc. If so, uninstall these applications.

Tags: Mac OS & System Software

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