thank you i'll try it, i mean i would love to have the clouds on but it sacrafices my performace way to much, so if thats the case i'll just deal will simple clouds
Your problem may be linked to the cloud drawing distance, which has to be set to the minimum on slower computers.
Also, you have to know that the default cloud textures from FSX are a ressource hog ! Their impact on the FPS is just dramatic.
If you switch to lower resolution textures, like FS Skyworld 2004 or HDE (both for FS9), to adopt 512x512 clouds, you will definitely see an improvement in the FPS.
Flat 2D clouds are so UGLY that I prefer flying with low FPS.