Fix Firefox high CPU or Memory usage on Windows 11/10

High CPU or Memory usage is known to irksome down, hang, or freeze systems with Windows x installed in them. This high CPU usage could be caused past many applications and processes. If your arrangement is showing loftier CPU usage due to the Firefox process, then this commodity would be helpful for you.

Firefox high CPU or Retentiveness usage

The main causes of high CPU usage due to Firefox are every bit follows:

Buggy extensions and themes
Faulty hardware dispatch
Corrupt content-prefs.sqlite file
Insufficient RAM in the system
Heavy processes running on Firefox.

Information technology is suggested to update Firefox to the latest version as a prevention as a prelim to the troubleshooting. Then you could ty the following:

Impale the Firefox process and restart it
Disable buggy extensions and themes
Update your system's Graphics Card drivers
Cease heavy downloads and close resource-heavy websites
Turn On Hardware Acceleration
Delete the corrupt content-prefs.sqlite file
Reset/Refresh Firefox.

If you encounter the upshot in discussion, proceed with the following solutions sequentially to resolve it.

1] Kill the Firefox procedure and restart it

Firefox high CPU or Memory usage

In case Firefox is consuming a lot of organisation resource, it could be due to heavy processes or downloads in Firefox. In such a case, right-click on the Firefox procedure in the Task Manager and select End process.

Launch Firefox once more. This volition re-open your tabs.

2] Disable buggy extensions and themes

Disable extensions

At times, themes and extensions on Firefox consume a lot of system resource even though they might not be doing so visibly. To isolate this cause, you could restart Firefox in Rubber Mode and check the system usage in the Task Manager.

If information technology helps, endeavor disabling unverified or heavy extensions as follows:

Open the address about:addons in the Firefox address bar.
Right-click and select Disable for heavy and unverified extensions.

Restart Firefox.

This post will show you how to gear up Firefox bug with add-ons & plugins.

3] Update your system's Graphics Card drivers

Update graphics card driver

The organization'due south Graphics Bill of fare commuter helps in running graphics-heavy content on Firefox such as videos or games. In case information technology is outdated, you might encounter problems like the one in the discussion. The procedure to update your Graphics Carte du jour drivers is equally follows:

Press Win+R to open the Run window and type the control devmgmt.msc. Hitting Enter to open up the Device Manager.

Expand the listing of Display Adapters and right-click on your Graphics Card driver.

Select Update driver and follow the instructions for automatically updating information technology.

Restart the system.

Read: What are Retentivity Leaks?

iv] End heavy downloads and close heavy websites

Firefox isn't a heavy browser in itself, even so, the system utilization depends on the processes running through it. Thus it is appropriate to stop heavy downloads and close heavy websites to reduce the load on the arrangement. This is especially true for online gaming websites.

Read: How to gear up 100% Disk, Loftier CPU, High Memory usage in Windows 10.

five] Turn On Hardware Dispatch

Firefox hardware dispatch is enabled past default. It controls memory usage to some extent when running graphic intensive media on Firefox. Thus make sure that the option for hardware acceleration is checked in the Firefox settings.

6] Delete the corrupt content-prefs.sqlite file

One of the major causes for Firefox causing high system utilization is a corrupt content-prefs.sqlite file. You can delete this file as follows:

Re-create-paste the path well-nigh:support on the address bar of the Firefox browser. Hit Enter to open the Troubleshooting Data page.

Nether Application Basics, y'all would find an option names Profile Folder. Corresponding to it, there would be an icon named Open Folder. Please click on it to open the Profile Folder.