There will always be games that don't work perfectly with the default GOMPS settings. This repo hosts good GOMPS settings for specific games.
File names have the format [game-slug].json. The game slug is generated from the game exe name, and you can find it in the BepInEx console where it says Getting game settings from https://gomps-settings.pages.dev/[game-slug].json. I'll make this clearer later 🙏