In this level specifically, it would originally lag on a Steam Deck with the animated boat enabled. Now, I replaced an old method with a clean new one so you can play this level as intended on a Steam Deck. If you want to play this game on a Steam Deck, just...

1. Download the same file as on Windows onto your Steam Deck via your internet browser (such as Google, Vivaldi, etc.) on "Desktop Mode".

2. Add the ".exe" file to "Non-Steam Games" on the Steam App.

3. Go to the App's "Properties".

4. Go to Compatibility and check the box next to "Force the use of a specific Steam Play compatibility tool". If you aren't sure which Proton File to use, select "GE-Proton9-12", or "Proton 9.0-4" below.

5. Play the game.