Great feedback, thanks,
yeah the particles around the ship are REALLY heavy, bloody designers ;) OpenGL really doesn't like it and DX11 only just copes. We'll have to look at it. I'll look in to the vsync, that should work. Yeah, the shadows are odd, the higher quality they are the more blocky they are.... because they are more voxel-like, bit odd :)
I've got a reproduction of that crash and I think I know what it is. The progress and preferences are saved before it does it so it's not too fatal. I'll fix it though.
Thanks for helping to make the game better.