I have BT fibre and still use a home hub. How ever every game i play i seem to suffer with really bad lag spikes, i am also using the bt power lines adapter and have an ethernet. The lag spikes are most noticable with league of legends as i often hit as high as 500ms and just disconnect. This is really fustrating me as at the very beginning it was ok-ish how ever now it is unuseable at times and often i cant even watch netflix or now tv.
i have tried turning UPnP off, smart set up off, and putting my console/pc in dmz. nothing seems to be doing anything