FF has never been rock solid for me. Massive CPU usage. Causes my fans to turn o...

matheusmoreira · on Oct 12, 2019

Same experience here. Browsing with Firefox increases my CPU temperature by 10 degrees.

zbraniecki · on Oct 12, 2019

Try Beta/Nightly! Firefox got much better for MacOS in 70/71 but that version is not yet in stable.

AsyncAwait · on Oct 12, 2019

This is macOS specific & apparently actively being investigated, not present here on Linux.

matheusmoreira · on Oct 13, 2019

I'm a Linux user. While browsing with Chrome my CPU temperature hovers around 45 degrees. If I start using Firefox it increases to 55 degrees.

taurath · on Oct 13, 2019

Sadly it’s been 5 years. I’ve reported it many times with lots of logs.

AsyncAwait · on Oct 13, 2019

There have apparently been considerable improvements in this area in the latest Nightly/Developer editions, not in stable yet.

taurath · on Oct 13, 2019

I have tried once a year. This is always the promise. It’s still not been fixed.

I get downvoted every time by people who don’t want to hear negativity about Firefox - I keep trying because I want it to be usable for me.