My guess would be that you're running it on a Mac with bootcamp and that's not officially "supported" by Solidworks as a supported platform to run Solidworks on
yes i use bootcamp,
the problem is that a friend of me runs sw on bootcamp on a macbook pro 2011 whit almost the same specs, and that runs perfect. but mine is horrible,
i have lookt at update drivers but i have te moste recent driver.