I don't do computer games much, but my ex does and he's running 2k.

I have no suggestions on the anti-virus. McAfee and Norton always manage to piss me off before the 1 'free' year of updates is over, so at the end of the year I buy the other one for a year. Although, the latest version of Norton hasn't managed to screw things up, yet. It could just be that I'm on 2k.