My game seems to tense up, crash, or lag when in certain areas:

-Camp McCarren
-Freeside
-Bitter Springs (Big time)
-The Fort

Bitter springs is by far the worst...no matter how long I would play before I get there, the game just freaks out. And if it doesn't, I know it's only a matter of time. Any input you can add would be great, including where you game seems to freeze up (if at all)