I have recently updated my OS Lion 10.7.5 to OS Mavericks 10.9.5 and actually Rage lags a lot inside the game! Have you got this problem too? what is the solution?
No, there was no difference I could see. Combat was fluid, loading lag was a bit because I have it now on an external USB drive.
Maybe the intel HD 3000 ignores most of the eye-candy possilities of 'real' gfx-cards, so, no lag.