Although I haven't experienced the great FPS increase that the dev team spoke so much of, my performance is a lot more stable.... still getting the odd stutter once in awhile but i have yet to find any game that doesn't do that on occasion. The lack of such a massive FPS increase may have something to do with the fact......
....
I can now use shadows!!! 
Thank you dev team! Keep up the good work!
Now the bugbear..... is it my imagination or has the crosshair in the 109 become fainter?
Otherwise... I am VERY happy.