If you are getting kicked from servers, your PunkBuster might be out of date. You can manually download the latest pb files from official resources and overwrite the contents of your game's pb folder.
Running this on a modern rig is a dream. You can easily push 300+ FPS (if you uncap the framerate), making the aiming mechanics feel incredibly snappy compared to the locked 60FPS of the Xbox 360 era.
Corrects a health replenishment issue for systems using certain AMD Dual-Core processors. Pros and Cons
The patch improved the integration of PunkBuster, the anti-cheat software essential for legitimate online play. 3. Gameplay Tweaks