I don't really care that much about how many ms of difference there is in page rendering between the two but blocking UI is a different thing. Still in 56 with

I don't really care that much about how many ms of difference there is in page rendering between the two but blocking UI is a different thing. Still in 56 with no legacy extensions UI blocks from time to time, switching between tabs is slower than in Chrome and scrolling blocks more often. But if I understood correctly that could be finally fixed in upcoming releases.