We have a home full of P9's and these have been reasonably reliable for several years, albeit with occasional instabilities now and then. In the past week or so we had a bit of a system melt down but...

We live in an old house in the countryside with very thick walls. We have 4G broadband coming into the house via an antenna and a TP-Link MR 600. This connects to a Deco P9 network (9 units in all)....