Ask TP link for a custom firmware to force the use of ethernet backhaul, it fixed my problems of the mesh crashing to red lights.

@Wrayman I don't know why they don't allow for the channel width to be reduced too, if it wasn't as wide then I think everything would place nicer especially on the 2.4ghz band. It just makes more...

My PX50 mesh does this too.

I got it to work again by power cycling the Deco, in my case it was the main Deco which needed the reboot to get the PLC back.

@SaschaPapini What's the name of the app in your screenshot? It looks very informative.

How do I get one of my PX50 Deco units to be on the same 2.4ghz channels as the rest? Optimize isn't working. Is this even normal?