I’m using GL-AR300M in Router mode and experiencing the following issue: after a long video call (>= 1.5 hours) Wi-Fi becomes unstable. The longer call is the more unstable Wi-Fi becomes. Sometimes it comes to the point where authentication on Wi-Fi starts timing out.
There are a few things I noticed:
- If I don’t make any video calls Wi-Fi works stably for days (downloading files form internet doesn’t seem to break it)
- Restarting Wi-Fi from LuCi (https://192.168.8.1/cgi-bin/luci/admin/network/wireless) always helps. If Wi-Fi cannot authenticate anymore I have to connect using Ethernet cable to be able to restart Wi-Fi.
- Trying to monitor traffic with tcpdump I noticed that when Wi-Fi is unstable network packets from Wi-Fi to laptop/mobile seem to go well, however packets from laptop/mobile rarely reach Wi-Fi device
- Disabling WMM seem to help avoiding this problem however disabling it seems to limit Wi-Fi network bandwidth