Hey you all,
That's maybe a ridiculous problem which happened in windows 8 64 bit Graphics not the 32 bit. In general, windows 8 64 bit works perfect. but my graphics 3D Gaming subscore dropped from a 6.9 to a 2.0 since upgraded to win 8 64 bit. I have an ATI Radeon 4850 with the latest catalyst 9.6, and I cannot understand why going 64 bit would do this.
many thanks for your any help.