Incredibly Choppy Framerate

[Samakar]

Hello,

So, I received this game as a gift from a friend of mine on Steam and was excited to finally get a chance to try it out.

My initial problem would be that it would crash before it would even load. So I updated it with the latest drivers from Nvidia and I finally got it to load.

Now, my main problem is that the game is super choppy, like every two seconds, even on the lowest settings with the lowest screen resolution and all of the extra stuff off.

This confuses me because my computer can run games on medium to medium high graphics, even Crysis.

My current card is an Nvidia Geforce 7900 GS and I'm running it on Windows 7 64-bit.

Plz halp?