When i switch over to experimental and run it...
The game makes to launch, the screen goes fullscreen/black, then it dies and produces a small error box:
Error compiling pixel shader PSNonTLHeatHaze:0
and the game closes before fully opening. I have tried reinstalling dayz, and removing the 'dayz' folder from my documents in the hope it would rebuild it on launch.. But the game doesn't launch on experimental.