X14Halo

I have seen screenshots of the sky in ARMA 3 and the volumetric clouds look incredible. But when I play I am only seeing a clear sky, and when there are clouds they look like crap. I have most of my settings up on high...is there something I'm missing? What option in video options controls how the clouds look?

I never really crashed much before, and now ever since this new patch my ARMA crashes like once every 30 minutes. Just freezes and says the process has stopped responding.