Riley_S wrote @TpNewb, Does the unit feel excessively warm to the touch? Or is it sitting in a sunny location. I cannot see a slowdown such as this being affected by an overheating issue. Also, the...

@Riley_S Thanks for your reply. No, unplugging the ethernet makes no difference in speed. The only thing that helps is unplugging the Deco unit and leaving it unplugged for a few minutes, and then...

@Boss2 Did you ever get a resolution, I am having a similar issue with m9 ethernet backhaul

Firmware 1.5.1 Build 20210126 Rel 62679 Hardware version: 1.1 I have multiple installations of Deco M9 plus using Ethernet backbone/backhaul. All of the installations after about 7 days have...

@TP-Link oops that was it! I had the values also in the dhcp server. Duh I forget I placed the 10001 and 11111 I'm that screen

@TP-Link Yes as I said in my OP I setup exactly as you said (it's the only way). Plus I confirmed it is saved via the Deco app and the Deco admin web site. Yet the DNS server IP distributed to ALL...