Safari URL bar search delay: unintended searches

If I use the url bar to access a frequently-visited site, it is often quickly pulled, so that I can reflexively press enter and arrive at it.

On other occasions, search results are delayed, so it instead submits my partially-articulated url to my search engine, and returns search results for "calen" or the like.

This is easily avoidable by keeping frequently visited urls in memory, and a crucial interaction for quick use and travel between sites. Frequently visited sites should be instantaneously and reliably recallable, without random delays that result in misdirection.