After updating my Decos to the latest version (FW 1.1.5 Build 20170820 Rel. 62483) I was able to get two of my units to play nice over ethernet using the tp link TL-SG1008D (modem > deco #1 > tp...

I'm having the same issue with my unmanaged switches. I've tried both a d link GO-SW-5G and a tp link TL-SG1008D. When I try either switch my primary and secondary decos will alternate between...