TheRagingMisfit

I bought Fallout: New Vegas yesterday. So far it's not running that great. It runs a pretty choppy at a average of 18 FPS. It has also crashed three times out of the three times I have played this game so far. I would greatly appreciate any help on any way I could fix this. Thanks in advance! Here are my computer specs: Processor- AMD Athlon II P340 Dual-Core 2.20 GHz Ram: 4 GB Graphics Card- ATI Mobility Radeon HD 4250