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

Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

Firefox memory usage extremely high

  • 2 fhreagra
  • 3 leis an bhfadhb seo
  • 1 view
  • Freagra is déanaí ó cor-el

more options

This gaming computer is brand new and so is the firefox browser on it. The usage currently on this firefox is extremely high and I was concerned why it was so high in respect with the same number of tabs being opened on another browser such as Microsoft Edge. One extension is downloaded and that is Adblock plus. The image attatched is normal firefox usage for me. 16gb of RAM in the gaming computer also.

This gaming computer is brand new and so is the firefox browser on it. The usage currently on this firefox is extremely high and I was concerned why it was so high in respect with the same number of tabs being opened on another browser such as Microsoft Edge. One extension is downloaded and that is Adblock plus. The image attatched is normal firefox usage for me. 16gb of RAM in the gaming computer also.
Attached screenshots

Athraithe ag CharlieF22 ar

Réiteach roghnaithe

If you use Adblock Plus then you can consider uBlock Origin as a replacement to see if that works better (lower memory footprint).

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window
Read this answer in context 👍 2

All Replies (2)

more options

Accidental post, sorry.

Athraithe ag CharlieF22 ar

more options

Réiteach Roghnaithe

If you use Adblock Plus then you can consider uBlock Origin as a replacement to see if that works better (lower memory footprint).

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window