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.

FF 59.0.1 is consuming lots of CPU and memory even with "add-ons" disabled

  • 3 replies
  • 1 has this problem
  • 7 views
  • Last reply by Shadow110

NQuinn036
NQuinn036
more options

Upon upgrading to FF 59.01.1 experiencing lots of use of CPU and memory. Once I click to a news story for example on yahoo memory use skyrockets and increases constantly and CPU is at 40 or more percent and increases even if I just stay on the one page, eg I have Yahoo open now and its at 97%. The system then slows to a crawl. Disabling the add-ons did not help. Any suggestions? or can I go back to my older version of FF and if so how do I do it?

Upon upgrading to FF 59.01.1 experiencing lots of use of CPU and memory. Once I click to a news story for example on yahoo memory use skyrockets and increases constantly and CPU is at 40 or more percent and increases even if I just stay on the one page, eg I have Yahoo open now and its at 97%. The system then slows to a crawl. Disabling the add-ons did not help. Any suggestions? or can I go back to my older version of FF and if so how do I do it?

All Replies (3)

Shadow110
Shadow110
more options

Hi, Go to the Firefox 3 Bar Menu --> Options --> Privacy & Security then under Permissions check the setting to prevent Accessibility Services from accessing your browser. untick everything except above. change the recommended size lower then see how it runs. Note: 1 = No Multiprocessor = slow again. Try 2 Restart Firefox after making these changes please.

Please check have no bitcoin miners : Please use more than 1 scanner as each uses diff tech :

Save your Report and google each before deleting anything as do not want to delete something you need, If need help :

Post in only 1 forum, then wait.

Please let us know if this solved your issue or if need further assistance.

NQuinn036
NQuinn036 Question owner
more options

thank you very much for your help. Tried the suggestions..still have same issue. Unless I can somehow install an earlier version of FF, I will start using my Chrome browser which does seem to be having the same issue..

Shadow110
Shadow110
more options

By your description I take this is a older system with little ram. You can move to the 52.7.1ESR but it will be discontinued in June.

Just because can install Win 10 does not mean you should on some systems. Suggest going up the start button and right click everything and uninstall if possible all you do not use. Stop using Main Page Tiles, disable. Go through every setting and uninstall or turn off everything you do not need or use. like Cams and Mics, maps. Read and search here : https://www.howtogeek.com/search/?q=Windows+10+optimize Use Windows Disk Cleaner weekly and run it monthly but click on the Clean System Files button. Defrag Monthly.

Try this 7mins : uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files , C:\Program Files(x86) & C:\ProgramData Then restart system. Then run Windows Disk Cleanup. (Note: This should be Pinned and run Weekly, If never done below expect 10's of gig's) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you do :

Reinstall with Current Release Firefox 59.0.1 with a Full Version Installer

Please let us know if this solved your issue or if need further assistance.