Yep. And if frames are low for me the first thing to go is shadows and the next is to bump down world objects a notch. All this depends on your CPU and GPU, though, as some of these settings are dependent more on one than the other. I experimented for 30 minutes or so to see what had the biggest effect on frames for me. And aside from these settings, heavy clouds will cost me 5-6 frames as well. So I make different adjustments based on the situation and what matters to me at the time.