@David-TP Problem occurred for me after upgrade to 1.9.1 Build 20250612 Rel. 45690. Four Deco M9 Plus 2.0, of which three satellites on a MOCA network for backhaul after an unmanaged Netgear switch....

@Kevin_Z , I have two Deco M9 Plus set-ups in two different houses. In both houses, operating in router mode. Home #1 has ethernet backhaul. Home #2 does not. In Home #1, fast switching is on and...