I switched drivers and I'm using 12.4s and I don't get the flickering with ARF off.
When I don't use vsync the prop tears alot when I'm in the cockpit view.
The problem is the massive FPS drop, my min. FPS are fine with the 12.4s.
No matter the driver there is always a huge drop in frames.

I sold my 6990 with with waterblock on eBay last night for 550.00.
Yay! I am going to the green side again choosing a GTX 680 Classified. :•)