I have a MBP 2.66 i7 with 4 Gigs Ram.
Last summer I played Starcraft 2 on medium with no problems. The occasional drop in frame rates when you'd have 8 people with max units fighting at once, but nothing too bad.
Welllll here I am now and the game is unplayable. Nothing has changed hardware wise, though I did upgrade to 10.7.
Setting the game setting to LOW across the board does nothing. Even small battles sees a frame rate below 10 FPS. I have no idea why.
Is anyone else having issues?