Drivers for StarCraft 2

Contact the developer's tech support or try their forums. This site does not provide assistance for non-Apple products.

StarCraft 2 is a modern game, you are probably lacking in the RAM and GPU areas. There is nothing you can do to improve this apart from maybe installing more RAM, but I don't think it would be worth it. Your model of Macbook probably hasn't got sufficient GPU power for most modern games.

The game's developer, Blizzard, has explicitly stated in their support forums that the considerably poorer performance on Mac compared to Windows systems (with all hardware more or less equal) is due to poor OpenGL drivers being used with Mac OS X 10.6.4. They've stated quite clearly (and, probably with accuracy) that it is Apple's job to implement the newest/best drivers with their OS.

This is corroborated by Steam, which urged Steam users on Macs to avoid the 10.6.4 upgrade as the drivers included negatively impacted graphically intensive games provided by that service.

And, to the other poster, I'm playing the game on a late 2008 MBP that easily meets the recommend Windows requirements, yet is at the low threshold for the Mac minimum requirements. The perform difference on the same machine, playing between bootcamp and OSX, is really appalling.

Then you will need to await new drivers in some future release from Apple. Beyond that there's no solution other than playing from Windows.