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.

Firefox uses 100% CPU when watching youtube in private window

  • 1 reply
  • 0 have this problem
  • 54 views
  • Last reply by jonzn4SUSE

abdullahzafarrana
abdullahzafarrana
more options

Firefox in general uses a lot of CPU but when I watch youtube video in private window, the CPU usage goes to 100%. Why does it use so much CPU? I am using the latest version.

Firefox in general uses a lot of CPU but when I watch youtube video in private window, the CPU usage goes to 100%. Why does it use so much CPU? I am using the latest version.

All Replies (1)

jonzn4SUSE
jonzn4SUSE
  • Top 10 Contributor
more options

What are you working with? see screenshot Show the issue. What video are you watching and what resolution? Do you have the same issue with Firefox in Safe Mode? https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode

Modified by jonzn4SUSE