NVIDIA now offers new version 310.70 GeForce reference drivers for NVIDIA graphics cards. These include previously realized performance enhancements for Far Cry 3, Call of Duty: Black Ops 2, and Assassin's Creed III. Thanks MajorD.
Well, thanks for the heads up eRe4s3r. You were right, something must be wrong with my installer. Most items failed or partially installed, including PhysX now.