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I had to switch from FF to Brave on macOS because FF constantly kept over utilizing the CPU, leading to bad battery life and warmer MBP. This happened on Intel

I had to switch from FF to Brave on macOS because FF constantly kept over utilizing the CPU, leading to bad battery life and warmer MBP. This happened on Intel and M1 chips.

com2kid 4y ago
Over the last year FF has gotten a lot better about not keeping my MacBook awake because of content on some random background tab that the browser thinks is multimedia content. Circa 2021 if I wanted my MacBook to go to sleep I had 5o shut down FF first. FWIW wasn't any better on windows.