@EricBoy Do you run your Deco mesh in Router mode or in Access Point mode? This is where to check it in Deco app:

@Roy-B You can not change which node Satellite node connects to, at least not in current X20 firmware. See TP-Link article on that topic: [Deco] Manual Signal Source Selection Scroll down to the...

@Roy-B Your edge node, is it connected to hallway node, or to main Deco node?

@_Btree019_ If you haven't changed talk talk router to "modem only" mode, you may not need to do that with bt. Also, do you run Deco mesh in Router mode or in Access Point mode? This is where to...

@AdrianMason I would also recommend you check following things, if your PC runs Windows. 1. In Windows System screen, navigate to Power Options, and set Maximum Performance for WiFi adapter (make...

@AdrianMason Have you considered powering off Deco units for the night, to prove they cause the issue and it is not just a coincidence? It is hard to imagine how wifi router could impact mobile...