CODE VEIN crashes when run with gamemode

[SeongGino]

Describe the bug Title. Happens regardless of kernel, GPU driver (NV), or the presence of a valid /etc/gamemode.ini.

To Reproduce Steps used to reproduce the behavior:

1. Set CODE VEIN's launch parameters to gamemoderun %command%
2. Start CODE VEIN
3. Wait for the game banner to start, black window appears, then immediately disappears without warning, notification, or apparent cause of crash in any Proton logs.
4. Remove launch parameters from the game
5. Start the game again, only now it will successfully load and boot into the game proper.

Expected behavior The game should work with gamemode, as most others do.

System Info (please complete the following information):

• OS and version: Arch Linux
• GameMode Version: 1.8.1-2 (from Arch extra repository)

Additional context I could've sworn that this game used to work at some point with gamemode active, and I was able to make it work all of one time last night, but it certainly doesn't work reliably with gamemoderun no matter what combination of things I try, short of downgrading gamemode itself.