Quote Originally Posted by 'cgistar',index.php?page=Thread&postID=152174#post 152174
Edit: I wanted to note that the frame rate reduction I get has nothing to do with maximizer either. Simply starting to instances of wow in windowed mode manually, and then dragging one to the second monitor results in the drop in frame rate. This points back to Vista/Graphics drivers also.
Here's a question for you... are you running dual video cards or just dual display? I'm running vista 64 with an 8800gt and get 40fps out of my main window (maxfps40) with a single instance or 5 copies running...

if you are running dual cards, then if you start wow pointed at the m ain display and move it to the other one, it goes into software rendering, and yes, you'll suffer framerate hits.

If you are running a single card with dual displays and seeing this, something isn't right, because Vista FIXED the graphics subsystem.