Yes. It can start the search on the first character and on the demo it works. However, when I put it on a test page with nothing else on there, the page immediately began timing out and in a few minutes I had generated a few different error messages.
I am searching through a list of apprx. 10k items. I think that may be also why the performance issue is coming up.
As it stands, the native bubble > input forms > search box is the only one that seems to be suited for this scenario. It seems to not impact page load & this search box is on all pages. Trying to figure out if I can make that one work.