Thanks for the valuable feedback and the kind words. I saw 9k submissions, so it means a lot that you took the time to comment :)
We want to refine those items and upload as a subsequent version after the jam ends.
Regarding the performance on browser, could you share if you have hardware acceleration enabled? It seems to be a hit or miss on performance for some.
It does appear to be related to hardware acceleration. It was turned off when I first played the game. When playing with hardware acceleration turned on, the game runs a lot smoother. It might depend on the browser as well, I am not sure, but it appears that for Chrome at least, it needs hardware acceleration to run smoothly.