@David-TP Thanks. The issue has been ongoing for a couple of months, I have switched the connection between Main, 1st Floor, and even Terrace (Kitchen is a bit too far). All with the same issues of...

I have 5 units of Deco BE85 in my house with the following setup: Ground Floor: 1. Main deco (living room) - connected to modem 2. Satellite deco (terrace) - wired backhaul connected to Main 3....