@QRene Hi I upgraded again and I checked the Interfaces, they were 1000, so that is not the problem The download was now 85MB and the upload was 9MB After downgrading, the speed went back to 200MB...

Hi I have an Archer C5400 v2 in my home and works fine for several years now. I upgraded my internet line to Fiber (1GB down, 100 MB up) The provider gives a router with a very weak wifi 6E signal....