I searched around here and wow forums before posting. I found some ideas but I'm still left scratching my head. I now have two PCs.. both are high end rigs with vista 64 ultimate , 8 gigs of ram, GTX280s. One ( my original ) runs all 5 via keyclone with great FPS and smooth as can be. The new one runs like a slug when I'm in window mode ( even with just one client ) Whats weird is if I minimize the window, the small little window can then be stretched to however big i want and i can max the settings and have 60+ FPs and all 5 clients going. If i maximize while in window mode ( with or without the border ) I slow down to a crawl. If i run in the small window OR maximize with No window mode I can max everything out and run through the busiest zone with zero lag.

Looking for someone who might have ran into this, or knows a possible fix.