Update v326589:
- Bugs fixed and performance improvements for Vulkan graphics API.
- Fixed some rendering issues under OpenGL graphics API.
- Better detection of usable CPU cores.
- Fixed problems with Chinese Traditional translation in Road to Gehenna.
- Removed usage of D3DX library DLL.
- Enlarged FPS graph and added average line.
- Fixed problem with imprecise frame-rate limitation on Windows platforms.

Update v301136:
Bug fixes:
- Fixed black level issue on Mac.

If you experience serious issues, you may switch to "previousversion" branch.
Here's how:
- locate the game in the Steam's "Library" panel
- right click and invoke "Properties"
- select the "Betas" tab
- choose "previousversion"