Thanks for the 64b version!
Just fired it up, and already liking it a lot because of the atmosphere.
However, there are some serious rendering glitches. The image is fine when stationary.
But once I look around with mouse, there are large, full screen triangles flickering and disrupting the scene.
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce GTX 750 Ti/PCIe/SSE2
OpenGL core profile version string: 4.5.0 NVIDIA 367.57