As a counter example, I remember that I needed to do big reviews in GitHub using Firefox because Chrome would slow to a crawl in the Files tab in GitHub, while

As a counter example, I remember that I needed to do big reviews in GitHub using Firefox because Chrome would slow to a crawl in the Files tab in GitHub, while Firefox was just as fast as it was with small reviews. I don't think this is an issue anymore, but it shows that a few things have completely performance in different browsers.