I had Hub 3 which worked after a fashion but with a lot of equipment using the network I decided to get a hub 4 in the hope that it would solve connection issues and wifi speeds.
So far it has worked fine for a new Dell placed next to the hub. WiFi speed about 400mps and when I connect by ethernet ,still next to it speeds go up to c.600mps.
The rest of the house is now very poor whether with wifi or through ethernet cables. The new hub doesn't seem to like older equipment such as laptops and iMac.
I am considering sending it all back to Virgin but want to know if their boosters are worth trying and whether they even work with Hub 4? I know the Virgin connect app to find poor connection spots doesn't work with it.