sorry for the delay spent the last 6 hours flying my RC Sailplane was just the greatest day for it
anyway, I posted a new thread after this one.
I Had forgotten to update my ATI drivers to the newest 11.5 version and when i did this patch game me all kinds of performance in full screen mode. Still not perfect by far but its using both GPU's equally at least and doing much much better.
Update if you havent already and that might help. If not then will need to wait for more patches. Cheers