@David-TP My desktop testing images are attached (433 MB/s your way, 303MBps using bandwidth testing). I also including few images showing my phone (galaxy s20). - using bandwidth test - 481 Mbps -...

@David-TP QOS and UPNP setting solved the X55 wired 1GB ports. disabling 2,4 Ghz yields no changes/improvements. What is the expected Wifi when feeding the Deco X55 1GB of wired internet ?

I use 1 of the 3 ports on the X55 to deliver a 1GB connection from router. I then use one of the other 2 ports to drive my PC, hoping to get a 1GB ethernet connection - but to my surprise it only...