First--open up all copies of wow without using ISboxer--how do they run opened this way? If they perform satisfactorily in this manner it may be you need to adjust your CPU management within isboxer, or your window layout. I have a AMD 8350 and if I use round robin balancing I get about 10 fps-- but when I change to use every cpu with every window I get 60/30 at all times on medium-high. I have a GTX 560