Everyone playing this in 2025 do this! Go to the game in your steam deck library - settings - properties - betas - change it openbeta_win64- 2023, I know it says windows only but it runs fine on the steam deck from my testing.

Now go into the game go settings - controls - make sure to enable gamepad [on] then go back to settings - game - mechanics, framerate I set 120, aspect ratio 16:9, custom size - width 448, height 280.

Enjoy!