Have you recently added any AI traffic packages?Also, what is the condition of your harddrive (I'm not just talking the files, the harddrive itself needs checking, as they do go bad from time to time, and this can be an early sign of it).Basically, Memory usage will vary, but if the FPS is varying significantly with it, then that suggests something else is wrong. The fact that your memory usage varied widely is no cause for alarm. The fact that FPS is varying more than +/- 2 can be, though typically when fps can't reach your "locked" setting, it will oscillate wildly. So, if something changed recently causing you to no longer be able to be as smooth as you used to be, then it's time to look at your hardware.

Sure did.Everytime PAI releases a new package I install it and most of the time I don