howdy Hancock and welcome to the forums!

make sure to set your maxfpsbk to about 10 and maxfps to about 25 ... otherwise, both wows will try to get 999 fps each.

this should lighten the load on your cpu/gpu

you could also reduce your details to reduce the amount that needs to render
http://www.dual-boxing.com/wiki/inde...Graphic_Detail

if you have any questions, please feel free to drop me a note.

have a great weekend,

Rob