We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

FireFox taking so much memory and cpu and heating up my MacBook pro

  • 3 ŋuɖoɖowo
  • 3 masɔmasɔ sia le wosi
  • 9 views
  • Nuɖoɖo mlɔetɔ nomimalik

more options

I am using FF quantum latest version which is 59.0.1and it is using my half of Ram and Cpu Usage is 200% above and heating my MacBook Pro

Macbook specs are 8GB ram i7 processor 2013 early running on MAC OS 10.13.13

I am using FF quantum latest version which is 59.0.1and it is using my half of Ram and Cpu Usage is 200% above and heating my MacBook Pro Macbook specs are 8GB ram i7 processor 2013 early running on MAC OS 10.13.13

All Replies (3)

more options

Here Are some screenshots and I am using only 2 tabs one is facebook and second one is youtube on which nothing is being played.

nomimalik trɔe

more options

Please make sure that Accessibility Services are checked to Block and as navigation for your browser : http://kb.mozillazine.org/Menu_differences_in_Windows,_Linux,_and_Mac for Windows Direction below. and to make changes here : 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 let us know if this solved your issue or if need further assistance

more options

It surely reduced RAM Usage but CPU usage is above 200 and almost 300 %