I had fiddled with my settings until I got a good balance of performance and video quality. Previous to that everything ran OK except when I would go into the area with the scientist, mostly in the swamp to wipe out the snorks, the video would begin to stutter and eventually it got so bad I had to ALT-Tab to an open folder to even get out of the game. After some adjustments I got that calmed down. I didn't have this happen at all in any other areas. After many happy hours, my next main objective is the crypt and the wish granter, but I am cleaning up some side missions. All was OK until I went into the scientist's area again to see if he had sniper rifle ammo. The severe stuttering returned. Even when I made it back to the train yard, I have about 2 minutes of play then the stalling begins again. There's about 2 seconds of audio and movement then it locks for about 45 seconds to a minute. Repeat until I abort. This continues even when I go to the options screen. Quite maddening. My PC is older - a P4 @ 2 GHz, 2 GB RAM, nVIDIA Ge Force 6800 Ultra 256 MB RAM, 24" HD LCD monitor, Sound Blaster Audigy Zs2 sound card. Any suggestions would be appreciated.