Frontend & browser·Performance and Core Web Vitals
the page looked finished for a while before it would actually respond to a click.
Time to interactive
Also calledTTI
The point after which the main thread has been quiet enough for long enough that input will be handled promptly. It captures the gap between looking ready and being ready, which is the defining problem of a hydrated page. It has fallen out of favour as a headline number because it is noisy and easily gamed, but the gap it names is still the thing to look for.