Still happening, will be stable for a day then I get red lights in the late evening until I disconnect the ethernet cable between the units.

Update: My latest test was stable for just under a day starting from late last night but around 20:30 this evening the deco mesh went down and it was back to red light cycles on the deco units until...

@yves_b Tried that, all ports and cables are working fine including the run from the main to the dining room. I checked all cables with a network cable tester too and I can connect devices using all...

@David-TP David-TP wrote @Alexmesh Hi, I don't think there has been any confirmed issue yet with 1.2.1 firmware. For the issue reported here, do you mean all 3 Deco PX50 would turn red or flashing...

@David-TP Are there any known issues with this PX50 and ethernet backhaul in the latest firmware?

When I connect a slave Deco unit to the main Deco via ethernet it makes the mesh network quickly unstable and gives red lights, if I reboot and connect the ethernet backhaul when the deco is...