Performance issues on feature requests with many stars

[cl8n]

not sure exactly what I should be profiling for this, but I can reproduce on more than one browser/device so I'm assuming it's not just me.

compare this page with many stars https://osu.ppy.sh/community/forums/topics/130231
to this page with few stars: https://osu.ppy.sh/community/forums/topics/1975974

on firefox131 I have no issues with the latter, but the former runs all of its animations at very low framerate. my browser also freezes for a second or so when I switch back to this tab