Game running slow[CLOSED]

i hope not that i dubble post now, but cant find my old one.

well after i have installed all the expansions the game have started to run slow in a odd way, like the game time keeps moving but the sims just sometimes stand still frozen in place even when they got a task to profrom. i had not problem running the base game before on highest grafics, that said it dosent seam to make any difference how fast it runs even when i put down the game grafics to low.

anyone got any idea how to maybe fix this problem? if you can fix it at all