That's already fixed. But the game is very likely to get a patch so my workaround might be invalid later on. I sent extensive documentation to Platinum on what the proper implementation of their display modes should be already. There's these very weird things it does that it requests the refresh rates of the resolution mode internally on the list, but it uses the size of the desktop for the fullscreen display mode... It's no wonder the game just crashes for some people because of that.I believe there's an issue with the UI not scaling properly at higher resolutions.
I provided the addresses if someone wants to get dirty already. It can get quite a bit unstable for some unknown reasons tho. I've been unable to create a 4k display so far this way, but played through the entire game with native 1440p.