@Alexandre. In the end your comment was valid. I connected a switch to the second port of the main deco and connected all others (in)directly to that switch. Now all use ethernet as backhaul.

@Alexandre. I unfortunatly cannot make it this way as I have a combine modem/router/switch device... Thx for your $0.05 ;-)

@Alexandre. This looks like what is happening. The whole setup looks like this: Router +---- Main Deco [1] +---- Deco [2] +---- Deco [3] +---- Switch +---- Deco [4] +---- Switch +---- Deco [5] Do the...

I'm using 5 Deco M4's in access point mode. All are connected via ethernet to the main node. I notice that one of the M4's indicates in te Deco App that it is connected via WiFi (although this is not...