Reinstalled IL2 21946 - Dreadful FPS!

[signalnorth]

Can anyone help please? I've recently reinstalled il2 1946 on a computer that it previously ran on. It used to run well but now , this tiem around even with game booster I'm lucky if I ever reach 25FPS. Its awful!

I've checked that I have the correct drivers (I have) and I have defraged but to no effect at all.Loads of space on the drive left too.

I'm tearing my hair out here! Also the computer runs sluggishly generally if that is any clue at all.

Can someone tell me pleae how to do the diag test so I can post the findings here. Any help would be GREATLY appreciated in helping novercome this.

Thanks in advance!!!!!!!!

Signalnorth