wpf slow effect and low speed animation?

Let me explain about my problem:

I have a wpf form with few controls. some of these control over-writing templat开发者_JAVA百科e. for example a textblock with an effect will be trigger on Mouse-Enter event and change color of foreground to something else. But after running program when mouse enter on textBloc, it takes a few Milli-seconds until Mouse-enter event triggers. also all control or better say all control which use mouse-events have this problem.

How solve this problem???

this problem depends on two things:
1) system configuration (CPU, RAM , VGA) also depends on power of these parts
2) Windows Version (XP,Seven) seven Much faster than Xp, xp too slow

Tip: also you must know using wpf in windows xp two thing make this problem:
1) using effects(or bitmap-effect) on window
2) using allow transparency with none-border style for window

these effect make your window slow to occure any events and trigger! otherwise if You not use these effect, you have a good wpf app with good speed in triggering events(also on Minimal systerm ).

Good Luck