Virgin Media - 2.4ghz & 5ghz combined signal - Doorbell 2 connectivity issues

Since earlier this week I noticed my Ring Doorbell is not capturing video or motion detecting, also when I try to use "Go Live" it doesn't connect. If I reboot the doorbell via the Ring app then it connect for a bit, but then it loses connectivity. I have restarted my Virgin Media Hub 5, and also the Home Wifi Pods ... and no other issues with my home network. This is the only device that seems to be effected. I followed some advice and reset the doorbell, and reconnected to the Virgin Media wifi. It worked for a bit, then started to suffer connection issues. I have raised a support issue with Ring but waiting for a response. I found an old tp-link router that only runs on 2.4ghz. and plugged that into my main router - I then changed networks on the Ring doorbell to the 2.4ghz router and it connects fine... back to the way it was. But this isn't sustainable - I don't want to run two routers, and besides the RSSI is now red (RSSI -79) between Ring doorbell and the tp router. WHY has this stopped working this week? Has either VM changed something their side, or Ring has changed something on theirs that now is causing problems with Virgin Media Hub 5 combined channel optimization / wireless signal ?? If something is stopped being supported then we should have been notified... Also surely there are other Virgin Media customers running Hub 5 with Ring Doorbell 2, or am I just unlucky??