FS2004 + addons on Windows 7. Tragically low fps!

[Maciej Rozdoba 1024796]

Hello everyone. I need help as soon as possible. I hope there is someone on this forum that will be able to help me. Not so long ago I had Windows 7 Ultimate RC x64 (beta verios. build 7100) on my computer. Last days of February were also the last days of license of that OS. Now I have the official verison of Windows 7 Ultimate x64. I have the same software (FS9, Wilco/feelThere 737, PSS 757/777, Level-D, aerosoft London Heathrow etc.). And when I'm at Heathrow in Wilco 737 there is one, huge slide show. When I'm (hardly) airborne things are getting worse and fps decrease to 3-7 fps. I'm desperate. I can't fly. Oh and please note that PSS also behaves the same. Only Level-D is working great (it has never dissapointed me)! But the fact is that in airline I don't have 767 type rating yet. You know (as real as it gets). But there isn't only Level-D on this world. I don't know why the same things were working fine on beta version and why it is so bad on the official version which should be better the beta. At least I think so. It's a logical conclusion.

Please Help Me. I will be profoundly grateful if someone helps me.

 

Regards

-Maciek