I've been working on migrating the performance tests to Playwright and noticed that the way we test typing performance is different for the Post Editor vs. Site Editor. For example, for the Site Editor, we simply hit x 200 times and record the metrics:

...while for Post Editor, we make an arbitrary pause before each stroke (depending on the test):

Typing

Typing within containers

I'd like to verify if that pause is necessary, and if yes, if we can replace it with waiting for some UI element. This would simulate a real-user experience better and produce more consistent results, as wait timers with arbitrary values are known to be unstable.

/cc @youknowriad @dmsnell @kevin940726