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

After the recent update my firefox is using almost half of my PC's RAM.

  • 2 cavab
  • 1 has this problem
  • 5 views
  • Last reply by cor-el

more options

It's never been like this. It has become slow, laggy and unusable

It's never been like this. It has become slow, laggy and unusable
Attached screenshots

All Replies (2)

more options

You could try this please : Go 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 : Acceleration is for your Video Card, monitor to see if need to turn back on. https://support.mozilla.org/en-US/kb/performance-settings

  • Please leave the check mark in Prevent Accessibility Services.

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

more options

There is nothing against using only one content process versus multiple content processes in case of performance issues. Only if you completely disable multi-process then there isn't a separate content process and a crash in a tab will take down Firefox or the user interface will respond slower.