What I have tried: A. Checking the channel busyness. It’s a vacant channel. No disturbances. Nor is the internet speed being depleted by other flat mates. B. It’s new Swisscom router. So not hardware related. C. LAN works fine. D. Tried different laptops, same problem. E. Speeds I am getting are 3 % of what I am paying for. F. Swisscom assistant always shows up an error after trying to launch the program on the computer. G. I have moved houses/flat and the problem persists. Always after dinner time the WIRELESS connection starts to collapse up until 00:00 +-.