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.

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

Has anyone noticed how much firefox sucks lately? cpu overload/processes staying open causing freeze ups?

  • 1 reply
  • 1 has this problem
  • 3 views
  • Paskiausią atsakymą parašė Shadow110

more options

this is annoying on a daily basis. if i have 5 tabs open and close 4 of them the process stays open and uses mass amounts of cpu. firefox is not shutting off it's own processes - why are processes running when i only have 1 tab open and have closed the other 4. going to a diff browser soon as this is continually happeneing. tried the fixes suggested - nothing works.

this is annoying on a daily basis. if i have 5 tabs open and close 4 of them the process stays open and uses mass amounts of cpu. firefox is not shutting off it's own processes - why are processes running when i only have 1 tab open and have closed the other 4. going to a diff browser soon as this is continually happeneing. tried the fixes suggested - nothing works.

All Replies (1)

more options

Extensions can put them in and use about give or take 20megs each. You have 4 as that is the default being used for the amount of cpu cores. Should know what your using and why, info is easy to find : https://www.howtogeek.com/332449/whats-new-in-firefox-quantum/

Please : go to the Firefox 3 Bar Menu --> Options --> Privacy & Security panel and under Permissions check (put a tick in the box) the setting to Prevent Accessibility Services from accessing your browser.

Monitor in Task Manager. Should stay below 2 gigs. If excessive then do below and monitor and change if need to...Test and go up again , go back down, it will eventually get a zone you and it can live with.

Go to the 3 Bar Menu then Options --> General --> Performance and untick everything. 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.

Note : Hardware Acceleration is for Video Card, Monitor to see if remain off or to turn back on.

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