That doesn't sound completely right. If it was a 10% performance hit, I could blame the driver but comparing 60 FPS (I presume) with 1 FPS when people are play

That doesn't sound completely right. If it was a 10% performance hit, I could blame the driver but comparing 60 FPS (I presume) with 1 FPS when people are playing the game in Mac OS X using WINE; that sounds like something is probably not quite right in his code.