Ok connected my vr2100 to VM hub3.. the hub say speed is 400mbps but I'm getting is 150-200 from the vr2100.. any ideas what's the issue? Any settings need tweaking ?

Ok so virgin hub 3 is dropping WiFi signals so bought the vr2100 from Curry's as per there rep. Trying to connect to the hub 3 is a nightmare .. no internet.. everything is connected as per instructio