Hello @kazetsukaimiko, can you check how the game behaves with the game's launch options set to WINE_DO_NOT_CREATE_DXGI_DEVICE_MANAGER=1 %command%?
Hello @kazetsukaimiko, can you check how the game behaves with the game's launch options set to
WINE_DO_NOT_CREATE_DXGI_DEVICE_MANAGER=1 %command%?
This seems to resolve the issue for the opening cutscene at least:

@kazetsukaimiko This should be fixed in current experimental. Could you try the game without the launch option and let me know if you still see any video playback issues? Thanks!
@alasky17 Confirmed resolved in current proton experimental, no launch options.
proton experimentalx2 2022-07WINE_DO_NOT_CREATE_DXGI_DEVICE_MANAGER=1x2 2022-06
Compatibility Report
System Information
I confirm:
Proton Log
steam-1917450.log.tar.gz
Symptoms
Fails to launch on non-experimental Proton.
Video cutscenes are distorted- oversized (at least at 1920x1080 solution), colors are off, vertical bright yellow-ish lines. See screenshots:
Video at launch:

Video shortly into the story:

Reproduction
Launch the game, observe video cutscenes.