Hi Macrumors, I'm currently running a 2010 dual core i7 15" Macbook Pro. Here is my problem: I occasionally play some games, like Starcraft II and Counter Strike: Source. I'm able to run these games at decent graphic settings and not have them lag. I've been playing both of these for quite a while now on Mac OS X (but also have them installed on Windows 7 through Boot Camp). Recently, these two games have begun to lag tremendously when I try to play them in OS X (Snow Leopard). I've restarted my computer a few times and ran some basic diagnostics to the best of my abilities, but it looks like it's not a restart-your-computer type fix. I thought that it was my graphics card having some sort of funky problem, but the thing is, when I boot up into Windows 7, these two games run perfectly fine. So it's only lagging on my OS X partition. Does anyone have any idea why this might be? Thanks in advance for any help!