game has strange moments where it gets choppy

Playing a 6 player game againt hard AIs I was getting these strange bouts of choppyness some even culminating in minidumps. The game has also minidumped on me twice going back to the main screen. It did not do this to me ingames played on one star. Not sure whats causing it but it might be hitting the 2 gig limmit. I looked at my running processes wle the game was going and it was sitting at a gig and a half useage. It could be spiking above that. Im sory i could not be more specific on the cause