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Thanks for chiming in!

I have a question. Where are you guys at with this issue?

The thing is, literally every retina resolution Macbook I've tried this on (3 different machines) resulted in massive CPU hog with 4 tabs open on a few basic websites. Let's say they are reddit, hn, and youtube.

The Awesome bar is slow, switching tabs is slow, computer warms up in 15 seconds. Fans kick in, the rest is history. New profile, existing profile, it doesn't matter.

That goes for every single release after 57, including Developers, Beta, and Nightly builds.

15 inch ones are worse than 13.

This doesn't happen when I use external screen.

My feeling is in order to reproduce the issue one has to - Find a Macbook Pro released after 2012. - Open Firefox with aforementioned websites - Try to interact with the websites

Are there any active issues for it?

I remember this one: https://bugzilla.mozilla.org/show_bug.cgi?id=1404042

All dependent bugs are fixed, but alas, it made no difference.

Is there's anything I could do to help resolve this?



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