I've been on V/F fibre for about 8 months now and it's been stable since day one, I get about 75 down and 19 up via ethernet into my pc, but as has been said before router isn't great. I've turned WiFi side of it off and use bt whole home WiFi for wireless, but even with that set up absolute max WiFi speed I can achieve its 50meg down. Don't know if it's router restricting it or I need to adjust setting in router. Now I appreciate that 50 down isn't bad for wifi, but signal now all over house is rock solid thanks to mesh network