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Firefox used a lot of CPU.

  • 1 reply
  • 1 has this problem
  • 18 views
  • Last reply by FredMcD

canyonlight
canyonlight
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Firefox seems to use a lot of CPU capacity. I often notice the cooling fans running. Why does a browser need this much CPU? Is there something I can do to fix this?

I have attached a screenshot of CPU usage according to EtreCheck.

I am running OS X 10.11 6 on a mid-2015 Retina MacBook Pro.

Thanks for your assistance.

Firefox seems to use a lot of CPU capacity. I often notice the cooling fans running. Why does a browser need this much CPU? Is there something I can do to fix this? I have attached a screenshot of CPU usage according to EtreCheck. I am running OS X 10.11 6 on a mid-2015 Retina MacBook Pro. Thanks for your assistance.
Attached screenshots

All Replies (1)

FredMcD
FredMcD
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Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac=Options) key, and then starting Firefox. A small dialog should appear. Click Start In Safe Mode (not Refresh).

Is the problem still there?

https://support.mozilla.org/en-US/kb/websites-look-wrong-or-appear-differently

https://support.mozilla.org/en-US/kb/firefox-slow-how-make-it-faster

https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix

https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding

https://support.mozilla.org/kb/Firefox+is+already+running+but+is+not+responding