Hi! We are really sorry about the performance in some computers. We are trying to improve it a bit, but it’s somewhat tricky for the web version. In most computers it works nice, but in some others don’t, and it doesnt depend only on the computer specs but on browser or other factors.
You can try playing the Windows version, if you don’t like downloading raw things we might upload a Steam demo soon so maybe there you can play it.
Again, sorry and thanks for the comment! :)