Perhaps Firefox should finally get around to not being a destroyer of performance, stability and battery life on a large subset of MacBooks, so people such as myself can use it.
I honestly never had that problem, sure performance wasn't great 5 or 6 years ago. I've used Firefox as my primary browser for at least five years, switching from Chrome when performance started to improve for Firefox.
Agreed. When I open up Brave on my phone to use Google Newsreel or something, I feel that it is a bit more snappy than Firefox. Firefox also crashes more often than I would like on my ArchLinux personal laptop. However, Firefox rendering speed has caught up with Chrome since the Quantum update, maybe the rest will catch up also.
If a user tests Chrome and Firefox and only Firefox has bad performance/battery life, they'll blame Firefox.
Mozilla is aware - there are a few bugzilla reports open about this - but like most Firefox bugs it takes months or years to be fixed. Last year (nov/dec?) they fixed something that improved battery life, but it's still worse than Chrome for me.
Mozilla has been tracking cpu utilization/power consumption issues with certain MacBooks since Quantum was released. It seems to mostly affect MacBook Retinas without discrete GPUs. From the big tracker it appears the latest theory is it caused by an interaction between Firefox's compositor and the macOS compositor.
