DANGER!!! The wizard’s robe apparently can disappear on it’s own, and the robe is primary source of lag. Unfortunately, my attempted fix messed things up on my end, so the issue remains… At least you can avoid lag by not looking at all the wizards at once.
Caution: may not work in Chrome. Best played in Firefox.
The game might have trouble loading and can be very laggy, but it should run as intended eventually by reloading it if it doesn’t run.