(In reply to Olli Pettay [:smaug] from comment #14)
Aha, a bit older cpus (from 2011).
How do I make sure I'm using the new reddit design? Is it the default these days?
test is, old reddit is https://old.reddit.com, new reddit is https://new.reddit.com. anyway this happen with many website that, use a lot of js package, seems Firefox js renderer aren't too optimized for it (I seen multiple case not only on reddit, but on other google product, M$ product, etc, that use rendered/aht typescript build, and it's taxing the CPU), anyway I don't see any problem if, if I use lightweight pages, that isn't use any of those thing, on chrome, those builded js felt(yeah, I hasn't measure much, but 3-4s is really felt long, as people has un-normal standard for web browsing this day, they blame the browser for the slowness) slow, not terribly, but the respond time felt slow. Anyway webrender only move css rendernig to GPU right, how about GPU also render js? Does it make sense? Will it create a opportunities, or it's just not possible?