@Maxi99 If your Main Deco connected to ISP router/gateway (not just modem), consider switching Deco mesh to Access Point mode. That will remove all content filtering and antivirus features from Deco...

@Taffy22 Are you sure your device you use to run speed tests is not connected to Fritzbox 7530? Did you disable its WiFi after you configured Deco mesh, to be sure?

@kzykzykzy Yes, it can. Should be no issues with that, and if you want to wire more than one device - connect network switch to 2nd Deco port and connect as many wired devices to that switch as you...

@Papaey I would recommend to rely on X20s and only use M4 and E4 as Satellites in places where X20 signal does not reach. This is the process I would recommend: 1. Add all three X20s as Satellite...

@emhy There is a known issue with Deco, where wireless Satellite Deco strongly prefers to connect to Main Deco. TP-Link started to release firmware with ability for user to overwrite that, but there...

@digitalpr If I have a Main Deco as you suggest, will all of them be in one and the same WiFi Mesh network? Yes, they will. DHCP will be only enabled in the main router, right? Yes, main router will...