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A developer answered in another post

> The point of parallelization is to harness the full power of the CPU. If you don’t want that try reducing the content process limit near the bottom of general options.

[https://hacks.mozilla.org/2017/11/entering-the-quantum-era-h...]



It's not murdering battery because it's "harnessing the full power of the CPU", it's chomping through almost 1% battery a minute on Mac while doing virtually nothing.

Apparently "vibrance" is one of the culprits and switching to the light or dark themes can help a lot. But yes, it's destroying battery compared to Safari for me. Which is a shame, as it's already my default on Windows.


Sounds like you should definitely file a bug.


there is one: https://bugzilla.mozilla.org/show_bug.cgi?id=1404042 — it was moved to being tracked for v58.




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