In Firefox reddit (new version) will sit at about 50% of a core on my laptop. Simple mouse hover effects on the page lag about half a second behind my actual mouse cursor. YouTube (while not playing a video) will use about 15% of my cpu, even when idle in a background tab.

I’m not sure if the bug is in Firefox or in the sites, but it’s awful. I don’t understand how these issues don’t get fixed immediately. I thought for sure after the new reddit redesign landed that they’d iron out the performance issues in a month or two but I swear if anything it’s gotten worse.