The game image is vertically stertched by default. Change resolution to 1280x720 in game options to fix.
If gamescope is limited to 15 or 30 fps the game will also run slower. Not just only in FPS everything is slower, the entire game throttles.
My personal SteamDeck rating: Playable.
Detailed QA Report: https://gitlab.com/z-ray-entertainment/gamezone/steamplay-qa-testing/-/issues/12
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