I've solved the problem already by myself, I don't know how to delete this threat but if someone would do that for me, that would be fine, thank you. If anyone have a problem like I had, I run my game in the compatibiliteit modus(this is the word in dutch I don't know what it is in english) windows vista, and than the game hadn't any lag.
(sorry if my english isn't correct I'm dutch) greetings,
JRCapple