I can't get rid of the screen tearing.

My config is (granted) a bit weird, but Cuphead is the only game that doesn't take vsync into account:

- Windows 7 x64, vsync on in game
- RX 580, vsync on in global driver settings
- 1920x1200

Things I already tried:
- changing the vsync setting in-game (on/off)
- changing the vsync setting in the driver global settings (force, enable, disable)
- changing the resolution (even tried the stretching ones on my display, like 1920x1080 or 1280x720)
- installing older/newest video drivers
- changing the scaling settings in the video drivers (scale on display/scale on gpu)

None of the settings permutations seems to work. AFAICT, Cuphead doesn't have a "real" fullscreen mode? (only a windowed fullscreen one)

Anyway, if anyone has any advice, I'll gladly take it at this point.

Thanks.

You should look at this thread, either the registry editing or the mod might fix your issue.