I have been using React 18 on my personal website since the alpha stage. And I have to say, it is a big improvement in terms of performance, mostly on TBT.

Just one thing to note though, although many frameworks claim to support React 18, you will still see various minor issues (e.g. Gatsby is still using the legacy render in DEV build in certain cases instead of createRoot). Yet overall, the RC version of React 18 feels stable enough to be used in PROD.

I’ve been loving it as well, especially Suspense with Recoil/urql for state/ data fetching. Makes the code a lot cleaner and more predictable

Total Blocking Time. One of the vital measurements of webpage performance benchmarking.

Waiting for react-query and some other libraries to support it, been wanting to try it out for a long time already

react-query works solid - not perfect as expected for a RC still - but feels really good to use and I didn't even get started on the performance