Have all set 8 background 60 forground I dont use mouse follow i just click on the wow i want to control at the time is what im use too.
All wow windows are affected by the Fps loss not just the one im controling at the time .

edit *ok got KC to place smaller windows on the right side of horizontal setup.
just about log on and see if i ge the fps loss like i was before.

edit2 *hmmmmm had stickykeys warning come up striaght after fps loss iv
turned it off now but wondering if that was causing the prob will
update when i find out.