@David-TP Thanks for the reply. Set up is Internet--ISP openreach modem----BT router----main Deco X55 as you say but the power line is connected directly to the BT router and then onto the Firestick.

I have an X55 three deco system which works brilliantly other than my Iptv system is constantly buffering. My main deco is connected to my BT router and then to the modem. I have a second next to my...