yeah you need a decently fast hw accelerated terminal for it
for example, the gnome terminal is pretty slow; if you're using it, try running it in alacrity or kitty and see if that improves performance.
My laptop went bonkers trying to run it, maybe I have something misconfigured somewhere. I wanted to like it because it looks great, but I couldn't because it was seemingly too resource intensive.
Somebody mentioned I may have been running bpytop, so maybe this whole thing is my bad. I honestly can't remember what I ran now - I thought it was btop