As the title says, I'm experiencing strange choppiness every several seconds while playing rebellion. The system will hang for half-a-second or more before jolting back into smooth performance. It isn't behaving like "normal" graphics or cpu lag, IE: the framerate is perfectly smooth otherwise. However, this is making it very difficult to even want to play with the constant micro-interruptions of flow.
OS: Windows 7, x64
Graphics: ATI Radeon HD 5700, 720 Mhz, 1Gb DDR5
CPU: AMD Phenom II x6, overclocked to 2.7 GHz per core
RAM: 8GB DDR3
