I know Firefox has made immense progress in a lot of hard components. But the UI lag is ... ridiculous. And I mean it lovingly, I have nothing against "slow", I still love my HP48 calc which is sluggish in a way, but it's not jitter-lag.

I love Firefox extensions, I love the bookmark editor, I love the non-big-corp centric coupling. But I can only use it for long periods of time if chrome has a bug (I use canary). Or when they send a memory debugging build which are as sluggish as Firefox.

Every time I run Firefox I'm sad thinking about Firefox 2 with good old basic windows gui.

Also, since Chrome 56, maybe it's just an accounting trick, but memory usage dropped tremendously...