@edaragor Try enabling Guest Network, configure it to run on 2.4GHz band only, see if laptop can connect to Guest Network.

@KiwiCharlie Deco E4 units have 100Mbps Ethernet ports - that becomes limiting factor when Internet link speed is more than 100Mbps. Yes, you can add X20 as Main Deco to existent E4 Deco mesh. Follow...

@FlabbyPanda Connection Preference feature works for both Router and Access Point mode. For Connection Preference option to be available in Deco app, all Deco nodes in that Deco mesh must support it....

@Chris68 OK, this can do. You have latest firmware, which means issues must be somewhere else. Now to clarify how everything is connected at your place. 1. Main Deco, is it connected to the fiber box...

@Quintusson You will not need to buy new router. The plan I have for you is same I had for myself: start with what already there, make minimal changes to existent network - and if Deco mesh is not up...

@Chris68 I run Deco mesh with M9 Plus in AP mode, and can confirm it runs the way you expect it to run. What you have is not expected. I can't explain why your Deco mesh behaves that way, but may be...