Earlier quoted context omitted.
Also Vivaldi is faster.
I find this statement a bit puzzling. Vivaldi is the slowest browser I've tried in recent years. The couple times I used it I always went back to Firefox after a few weeks because I couldn't stand the sluggish UI anymore. Maybe it improved by now, but I find it hard to believe it's now supposed to be faster after Firefox' massive performance updates.
Then it got huge, and Chrome was amazing. And it seemed impossible for FF to be able to work out the technical debt.
Now Chrome often makes the fan kick in on my MBP and Firefox is lighter again in CPU and memory.
I think Safari is probably best in this regard on this machine, but I just don’t enjoy using it. Not sure why. Maybe I’m old and it’s just change.
Sadly, I did hit my first work website that only worked in Chrome this week. No FF, no Safari.