Ok, I turned McAfee off, Windows Firewall on, configured it, tried both UPnp, and port forwarding using the port it says it's listening on. Connected to his wireless (which is simple, because all I have to do is turn my wirelss on on my laptop and it automatically connects to it because he gave me the password), without his computer connected to the router, and yet I still only get speeds of about 7KB/s, whether I download from 1 host, or 10. I also ran the magnet test, and got the same results.

And no, I do not normally run with both firewalls running. And I'm not entirely sure if McAfee is a trial version or not, it came already installed on the computer.