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. But my older Archer C5400 v2 has now an improved wifi throughput. I went from  20-25 MB download to over 200MB download. I believe that is around the max for the Archer C5400

This worked fine until I upgraded to the latest firmware: Archer C5400(US)_V2_1.2.9 Build 20230907

The speed dropped to 20-25 MB download. I tried everything, but all my devices connected to the Archer C5400 had a max download of 20-25MB

In the end I downgraded to Archer C5400(US)_V2_1.2.6 Build 20220511 and this solved the problem, now I am downloading again around 200MB

Something is very wrong with the latest firmware for the Archer 5400 v2, I know it is an old model and I shall upgrade to Wifi 6E or Wifi 7 in the near future

Anyone also seen this?

Thanks

Jhuizi