[vardump]

Firefox overall performance starts to be pretty good and it's pretty pleasant to use. It feels smoother than Chrome on 2015 Macbook Pro.

But I guess there's a long tail of issues that keep some people from (still) switching to Firefox.

Mine is lack of smooth pinch-zoom on macOS. Once that is fixed, I think I'll be using Firefox most of the time.

On 2018 Android flagship phone, scrolling speed seems to be maybe 58/59 fps. Occasional jerky motion sticks out like a sore thumb. I think it might feel smoother steady 30 fps, because at least then all frames take equally long to render.