@Rodarius When home network doesn't have underlying problems, none of these issues should occur with Deco mesh running in AP mode. Here is what I can recommend: Connect all three Deco M4 to Ethernet...

Yes, you can. As long as they don't contain special symbols and spaces Deco software does not like.

@Katangawise Please also share "Show List" picture, example:

@AndreasDpunkt If you can, configure Deco mesh to run in Access Point mode, and check again. Switching a Deco to Access Point (AP) Mode ----------------------- I have Deco M5 hardwired to the ISP...

@AndreasDpunkt On your NAS, check what it reports for the negotiated speed of its Ethernet ports.

@COiSman You must have ISP router that you configured with 10.0.0.* IP range. You connected Main Deco to it. You want devices that connect to Deco mesh to be in the same 10.0.0.* IP range. If this is...