Linux export has been tested on Tuxedo OS, and the windows export runs perfectly on Windows 11. The mac export is a moonshot, I don't have anything to test it on.
If anyone's curious, I've included the awesome godot debug menu addon, so pressing F3 in game will pull let you see FPS. Pressing it again will give more detailed breakdown. If you're having performance issues I'd love to see a screenshot with the detailed info!