Do you mean that your framerate drops to 30-40fps after restoring from a minimise? If yes, then that can sometimes mean that triple buffering wasn't enabled again when you restored the game. Was a common issue in Crysis 2, didn't think it was in Max Payne 3. Although I could be wrong.
yes after restoring, how do i correct this triple buffering issue? first i thought it was CPU affinity problem.