Hello, Thank your for your suggestions. It took me a while to try things out because I didn't want to inconvene other wifi users in the house. I tried swapping the units as you suggested but that did...

I have the Deco P9 (US, version 1) set up as follows: - Main unit in the basement - Second unit on the ground floor, connected by LAN wire to the main unit - Third unit on the second floor, with no...