download rivatuner and install it go to direct X settings here
and move the slider to where i have it here
it would be in the middle by default
Just apply and that's it u should have a performance boost ur field will look blurred though but it fixes also the problem of "blinking" glass
download rivatuner here:
http://downloads.guru3d.com/downloadget.php?id=163&file=7&evp=3dd4bb8da7a55799f2d49e3dcfc0e6aa

and move the slider to where i have it here

it would be in the middle by default
Just apply and that's it u should have a performance boost ur field will look blurred though but it fixes also the problem of "blinking" glass
download rivatuner here:
http://downloads.guru3d.com/downloadget.php?id=163&file=7&evp=3dd4bb8da7a55799f2d49e3dcfc0e6aa