I'm having troubles with my WiFi router and my laptop at home. Communication between the two is crappy. So I made some test and also I tried different wifi channels and I discovered a weird thing: If I ping my wifi router having the ac power adapter disconnected (running on battery) response is very fast (around 1 - 2 ms) and I have 0% packet loss.
If I connect the power adapter, the ping response gets very slow (even up to 13000 ms) and packet loss gets very high (around 73%).
Changing wifi channels doesn't help... Is that an hardware problem or could it be some settings to check? Anyone else is having similar issues?
I'm on archlinux and gnome shell 3.18. Thanks!