Internet connection over LAN gone regularly
Hello people, my brother and I live in the top floor with a router used as an extension for the router below in the living room.
We both experience connection loss every 4-5 minutes for about 5-10 seconds. We use completely separate PCs. This is especially annoying while gaming because then we both disconnect every time. This started happening about two weeks ago.
We live in Germany and use 1&1 as provider.
Please ask further question if you could help us.
Edit: We both use Ethernet
Edit2: This doesn't happen with WiFi connection but the WiFi isn't stable in general so this isn't an alternative.