@David-TP I only have one switch and it is connected to the 1st floor. yesterday I checked again and the port is back to 100Mb/s. I unplugged the ethernet cables from the deco/switch on the first...

@David-TP I made a diagram. As you can see from the photo the 1st and 2nd floors are connected together (cascade) and the 2nd floor decoder is connected to the 3rd floor router. The deco on the 3rd...

@David-TP is there anyone?

I tried everything!. I changed cables, switches (managed and not). I reversed the decos but every time I always get the speed 100Mb/s! 1000Gb/s only for a few minutes! in the second port of the deco...

@skanpaul try to check again. for me too they go to 1Gb/s for a moment. Then they go to 100Mbs. I have tried literally everything! I think they are defective, at least the X10 line

Hi, i have same problem in AP Mode! one day it sets itself to 1000 and the next day it goes back to 100! I think they are defective! this problem dates back to 2020. I changed switches, cables, I...