Depends which hub you have and what the spec of the network adaptors on your laptops are.
What model is the HP? I know it's an i3 but there's loads of different ones. What does it say on the label?
Assuming it is 802.11b/g/n and only connects on 2.4Ghz, best you'll get is 30 to 40Mb (I have a fairly new HP laptop and this is the case).
You'll need to get a usb wireless adaptor for the laptop. It needs to be 802.11ac and work on the 5Ghz band to get the best speeds.
If you have a hub 2 or 2ac that should be fine. If you have a hub 1 (VMDG480) phone them, tell them it's faulty (it is, the wireless is carp on them amongst other things) and ask for a new hub. If they send you one it will be a hub 3.
Dave.