This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

High CPU/memory/power usage

  • 1 reply
  • 1 has this problem
  • 22 views
  • Last reply by Terry

silver_trashsh
silver_trashsh
more options

Hello, recently I noticed both of my computers get hot and fans get loud, I did some research and figured it's the Firefox that's causing it when I go to task manager the memory usage is always high and the CPU sometimes spikes up to 60-70% usage and the power usage is at very high . One of the laptops is windows 11 and the other is windows 10 . Please let me know if there's any fix to this. Thank you.

Hello, recently I noticed both of my computers get hot and fans get loud, I did some research and figured it's the Firefox that's causing it when I go to task manager the memory usage is always high and the CPU sometimes spikes up to 60-70% usage and the power usage is at very high . One of the laptops is windows 11 and the other is windows 10 . Please let me know if there's any fix to this. Thank you.
Attached screenshots

All Replies (1)

Terry
Terry
more options

You may find some useful information in this article. https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-or-cpu-resources