I have a macbook pro ( nov 2009 ) with a 9400M.

I upgraded to 280.26 when the game came out because they were they latest release drivers.

The game ran fine other than the texture pop which wasn't too annoying for me.

When the patch was released, I went ahead and tried to upgrade to the 285.38 beta driver.

With the updated driver there was much less texture pop, but bad stuttering in game and it froze up within 10 seconds of loading my save game ( in wellspring ) every time.

I reinstalled 280.26 and haven't looked back.