hey guys,

I've had the game for many months, and its always run very very smoothly, but all of a sudden, in the campaign, the game almost comes to a halt. Each turn can take about an hour, and it crashes probably 75% of the time now, and I have no idea whats wrong. I've been trying to see if getting a new graphics card would help but I'm not sure if that the problem. I've put all the graphics on the game to low, and I've defragmented, but nothing works. I have a NVIDIA GeForce 7900 GS. It says it has 256 MB. my computer has plenty memory space left. I've been seeing that a NVIDIA GeForce 9800GT is what a lot of people are recommending for the game. I'm willing to get that, but before I buy it, I wanna see if people think thats the issue or if there is something else I can do. Thanks to anyone who helps!