Can you play through that room in interpreter mode, or with the software plugin ? lol, it's gonna be sloowww
Also, rerun the DX webupdater just to be sure all files are ok. And make sure your gfx driver options are at the default and not some weird overrides. And use a different build in another folder.
Also, rerun the DX webupdater just to be sure all files are ok. And make sure your gfx driver options are at the default and not some weird overrides. And use a different build in another folder.