I have fixed this for build 113 to be released soon. The issue was related to the shader constants for dynamic lights that would be filled with garbage values with the latest drivers. Adding some dynamic lights solves the issue for 112 and below, but the next update will solve it for you
PC SPECS: Windows 8.1 Pro 64-bit, Intel Core i7-5930K (PASSMARK:13645), NVIDIA Geforce GTX 980 GPU (PASSMARK:9762) , 32GB RAM