Saw a post concerned that React rendering thousands of elements had slow perf even with concurrent transitions. Did some benchmarking and concluded that most of the overhead is the React DevTools (plus sync layout).

Broke down the time splits here:

https://www.reddit.com/r/reactjs/comments/1hmup2w/concurrent_mode_bottlenecked_by_commit_phase/m4lv7ke/?context=3

Comments