I only notice the kind of "tabs are slow to open" behavior pretty randomly, and without knowing the state of the rest of my machine at those moments (is there s

I only notice the kind of "tabs are slow to open" behavior pretty randomly, and without knowing the state of the rest of my machine at those moments (is there something else pegging a few of my cores for some reason?) I can't confidently place any blame on the browser itself. For what they are, I consider modern web browsers to be exceptionally fast and reliable, and they tend to put a lot of other applications to absolute shame. They are imperfect, but still very, very good.