Really enjoyed this! I did have to start over because I accidentally got the shelf stuck on the corner of the room, but it's a minor complaint. The writing, graphics, sound, concept, puzzles were all top-notch.
I wouldn't worry about the hitching, it seems to be an issue with Godot loading in particles/shaders for the first time in a web build. My last game got hit with it too. Fingers crossed they can solve it in the next release.
Great job!