Smoke shadows not in correct place.

[Igo kyu]

This won't be directly helpful, but what is a nVidia 7950 GT?

nVidia used to do an 8800 GTX way back ten years or so ago, but I don't remember a 7950 GT, presumably if you didn't make a typo, it's older than the 8800? They're on GTX 980s now, and AMD just passed from HD 7970 to R9 290X.

If your card really is that old, it may be time to think about something newer and stronger, IL*2 is built on the old code, but new additions probably assume somewhat newer hardware.