My boyfriend's internet is being buggy. When I'm at his house I sometimes cannot connect to my online game's server(but firefox will work completely as normal).

When it does work I always eventually get kicked off due to a "loss of connection", even though my connection hasn't gone out. I've tried resetting the router several times. The router is encrypted, his computer isn't connected to the internet, and I don't have any downloads going on.

Thanks for your time

Have you tried disabling windows firewall?