I'm also having this issue. I've recorded a short video and have a screenshot of my current gamedata. The game was at 1366x768 at the time but it happened for me at 1600x900. Everything is up to date except RCS sounds. Windows 10 Anniversary, 12 gb ram, Intel i-7 8-core, Nvidia GTX 1070. I think we can rule off ram or vram as the issue too.