On my older workplace PC (Core2 Duo E8400 CPU), I tried a few page load timings with Firefox and repeated with Firefox Quantum.
- Open Myce forum, then into 'Living Room' and into 'Say hi!' thread - Before: 11.0s, After: 10.9s
- Open Myce news, then into first news story (Adblock Plus) - Before: 11.1s, After: 11.3s
- Open Amazon, then into Today's Deals, then browse page by page to #5, allowing images to load - Before: 44.6s, After: 34.9s
- Open UK MetOffice, then open the Rain Radar map - Before: 8.1s, After: 8.1s
So apart from the Amazon Deals pages, both Myce (News & Forum) and the MetOffice website load no quicker than with the regular Firefox. That computer also has Windows 10 32-bit, so maybe the difference is greater with the 64-bit version of Firefox Quantum.
While carrying out the timings, Edge cheekily displayed the following pop-up ad:
Anyway, I timed loading the same set of pages on Chrome for curiosity and got 31.1s, a little quicker than Firefox Quantum.
While trying that quick test in Chrome, Edge once again popped its head with this.
With Edge determined to butt in, I figured I'll time the same series of pages on Amazon and got 26.2s.
Yes Microsoft I believe you,... now anyone got an Edge pop-up blocker?...