Wifi was disabled so that the test was measuring how long the browser took to load the profile, not how quickly Ayala's internet connection could download each of those pages. The first test was to measure how long it took each of those browser versions to start with the same tab profile selected. Dietrich Ayala, a developer with Mozilla, ran a test of Firefox 20, 30, 40, and 50-56 using a profile containing a whopping total of 1961 tabs. Fortunately, this is likely to change from Firefox 55 which is currently in beta. I'm a self-confessed serial browser user, and Firefox is one of my favorites (along with Vivaldi and Opera), which is why I have been particularly frustrated with the performance reduction it started suffering from around two years ago.
