How to troubleshoot Firefox High CPU Usage Error on Windows PC

High CPU or memory utilization has been known to cause systems with Windows 10 installed to slow down, freeze, or hang. This high CPU usage can be caused by many applications and processes. If your system is experiencing high CPU load due to the Firefox process, this article will help you.

What causes Firefox to have a high CPU load?

Graphics Driver: This problem is often related to graphics and is closely related to the graphics driver installed on your computer.

Suspicious add-ons: If you recently installed any new add-ons, you should consider uninstalling them to see if they are causing the high CPU load problem.

Current Profile Problems: If there are problems with your current Firefox profile, you should delete your current profile and create a new one to solve the high CPU usage problem.

How to solve the problem of high CPU usage in Firefox?

Perform Firefox in Troubleshooting mode

  1. Open the browser menu in Firefox.
  2. Go to Help -> Troubleshooting Mode.
  3. In the pop-up window, click Restart.

Firefox will restart without your extensions, themes, or configurations. You can see if Firefox is running with fewer resources. If so, the problem is probably related to one of your extensions or themes.

Turn on hardware acceleration

  1. Open the Firefox menu with administrative privileges and go to Preferences.
  2. In the left menu, select General.
  3. Scroll down to the Performance section and turn off the Use Recommended Performance Options option.
  4. Enable Use hardware acceleration, if available.

Change the limit of the content process

  1. Open the Firefox menu and go to Preferences.
  2. Select General and scroll down to the Performance section.
  3. Disable the Use recommended performance settings option.
  4. Use the drop-down menu next to Content Process Limit to set a new lower number of available content processes.
  5. Restart Firefox.

Deleting a saved profile file

  1. Open the Firefox menu and go to Help > Additional Troubleshooting Information.
  2. Under App Basics, locate the profile folder and click the Open Folder button next to it.
  3. Completely delete the content-prefs.sqlite file.
  4. Restart Firefox.

Frequently Asked Questions

Firefox browser's high CPU usage is mainly due to parsing heavy site elements and background processes. This can be solved by optimizing your browser configuration and not using many third-party add-ons that run in the background.

  1. Turn off unnecessary processes.
  2. Defragmenting the hard drives of affected computers regularly.
  3. Do not run too many programs at the same time.
  4. Uninstall all programs that you do not use from your computer.

Firefox has a built-in tool for viewing memory reports and saving logs. It allows you to clean up memory and minimize memory usage. Type about:memory in the address bar and press Enter or Return. Find the Free memory field and select Minimize memory usage.

  1. Update Firefox.
  2. Run Firefox in Troubleshooting mode.
  3. Turn on Firefox's strict mode.
  4. Turn on hardware acceleration.
  5. Use Firefox tools.
  6. Change the limit of content processing.
  7. Delete the saved profile file.

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