I tried many different drivers (11.4/11.5/11.5b/11.6/10.12) and all the same exept 10.12 where flickering was much slower. Tried all CAPs since 11.4. Vsync/aa/af in games/in ccc dont change anything. I even tried to set lower resolution to run at higher refresh rate (75hz) and still no change. Tied each card separetly and its fine, so cards are ok. Tried two different cfx bridges. Maybe for crossfire setup its normal ?