After replacing the M4, the connection stabilized (at least after the replacement). Having said that, I did not bother checking it again since, until today My setup AX72---LAN---M4 (((wifi))) E4 x 3...

@woozle i also forgot that I have no way to properly test the throughput. So yes, speed test only to give me a ball park number.

@woozle Thanks. I forgot to mention this. This what I see. Lan 1 is connected to the M4, Lan 2 to this laptop I am using now Lan 3 is on a desktop PC Lan 4 is on a printer After resetting the M4,...

@terziyski The cable I am using for LAN was supplied with my providers' router, a Sagemcom unit and is a CAT5E. I replaced it with AX72. The one that came with the AX72 is also a CAT5E, on WAN port....

I don't have cat 6 but I quickly cut my cat5E to a foot long and crimped a new RJ45 connector - no joy. I will find a cat 6 cable. I have the cat6 connectors but no cable yet. Wish me luck.

@terziyski Thanks. I will give it a try. I will also make a shorter, CAT6 shielded cable. What threw me off was the router negotiating well with the PC at 1G but not with the Deco. I will update with...