This game is made in Godot, and as it turns out.. it doesn't do to well in macOS. I'm no expert, but just think of it as "Chromium-based browser (Chrome, Brave, etc.) and Safari freezes up the game". Firefox seems to work fine for me.

Sources: https://github.com/godotengine/godot/issues/70691 https://github.com/godotengine/godot/issues/74512 (and other duplicates that always lead to these two issues)

tldr; use firefox