Driver San Francisco game experiences stutter (some pause) every few seconds on Mountain Lion (using Nvidia 320M chipset). Some tried to disable V-sync, however as the preference is reset, the game config file (in the now hidden user’s library folder, available through Go to folder menu) has to be edited and permissions modified.
In fact it runs fine (even with medium settings) under Snow Leopard (no pause), then it also didn’t come from the 256 MB shared memory (512 MB dedicated memory listed in requirements).
Cjed Audio 