Vista Explorer Window Slows When reduced/restored Thoughts??

I have 32bit Vista RC2 running on my XPS M1210 with Core2 Duo at 2ghz with 2048 RAM and an 80gb 7200 drive.

 

It seems that when Im using Windows explorer the system slows.

 

It is noticeable when I restore windows up and down.  The state seems to do it choppy rather than smooth.  This occurs when I click on explorer and reduce or restore it to full screen.

 

Now, when I hold down the windows key button and hit the tab button, aero cycles through windows smoothly now.

 

I notice the difference because, after this, when i reduce or restore explorer or the window in use, it is very quick and very smooth...not choppy at all.

 

After a few seconds however, back to the choppy state when performing tasks.

 

The second way I notice this slowing is when I scroll through a long screen.  If I do it normally and hold my mouse on the right scroll bar, the croll bar trails and catches up to my cursor.  When I first start explorer or speed it up through the aero cycle however, the scroll bar keeps up with the mouse pointer.

 

Any thoughts or help???

 

Les