I keep getting countdowns from 8 or 15 to 1 [or partway there], and then "onclose", with the UI saying "Lost connection to server, please try again in a bit".

I keep getting countdowns from 8 or 15 to 1 [or partway there], and then "onclose", with the UI saying "Lost connection to server, please try again in a bit". For variety now and then I get a 502 somewhere in websocket setup. When it is counting down, it takes 100+% CPU. The sample render looks really cool, though. Nice project; thanks for sharing it.