Inconsistent spacing and missing letters on Linux (CachyOS)

I tried everything i could find to possibly fix it:
- DX12 or Vulcan
- Installing fonts, Wine
- Different Proton versions
- Different launch options
- Anything i found on my own, plus everything suggested by multiple AI models, like registry changes, renaming other font to fontin to trick the game

But no matter what it stays same, missing letters and weird spacing.
Using CachyOS, KDE, Wayland.