Windows 10: Best Fixes for Firefox High CPU Usage on Windows 11

While many users claim that Firefox is the best browser for customization, security, and speed, it does come with some problems. One of these is pushing the CPU so high that it affects the performance of Windows 11.

You can quickly open your Task manager to see if the browser is the main culprit of high CPU Usage on Windows 11. If Firefox is the problem, here are some tips on what you can do. Thankfully, I don’t have these issues with Avast Secure Browser.

Close any Unused Tabs


I know what it’s like to open multiple tabs in your browser. I usually have tab folders with sites minimized in each one, but that doesn’t always solve the problem. If you have many open in Firefox, it’s going to cause massive CPU usage on Windows 11.

It’s even worse if any of them are streaming audio or video in the background or have several animated ads. Whichever ones you’re not checking out, close them.



Update your Browser


When Firefox is outdated or obtains a glitch, it may affect your Windows 11 performance or CPU usage. You’ll usually notice this when you only have one tab open, but the browser is still using loads of system resources.

If you open the main menu option and head down to Help, click on the About Firefox item. If there’s a new update, it will automatically be detected and start updating. Well, it should. You may need to search online if there’s one you missed.



Clear Cookies and Cache


Like most browsers, Firefox stores cookies and data in the cache so that web pages you’ve visited will open faster next time. The only issue is that this takes a strain on your Windows 11 CPU resources, especially if the data is corrupted. If none of the above techniques work, you may want to try clearing your cookies and cache.

Just head to the same main menu and click on Settings. From there, go to Privacy and Security and click on Clear Data. You can also choose what type of data you want to clear. When you restart Firefox, websites will initially be slow to open until sufficient data is stored again.



Disable Extensions you Don’t Use


I love browser extensions as much as the next Windows 11 user, but having too many of them can lead to increased CPU usage. Most people don’t know this, but they’re usually active for as long as Firefox remains open.

To get rid of a few Firefox extensions, head back into that main menu and go to Add-ons and Themes. Here, you can quickly see which ones are active and disable the ones you don’t really need. Feel free to even remove them altogether to see if that helps with performance.



Is Hardware Acceleration Enabled?


Here’s a little technical advice for those of you who have a powerful GPU that you’re not using efficiently to run Windows 11 and browsers. There’s a cool trick you can use to switch some functions from the CPU to your GPU, especially in Firefox. When you have Hardware Acceleration enabled, all the visual effects on your browser’s screen are powered by your GPU instead of your CPU. You should see improved performance after making this change.

To do so, head back into the Firefox main menu and click on Settings. By “More from Mozilla”, select the option to enable Hardware Acceleration.



How much do you love Firefox?


If none of the above options help you, then you have two options. You can either switch to a new browser and delete Firefox, or you can delete and reinstall it. Like I said, I don’t have any issues with Avast Secure Browser, and you can quickly transfer your bookmarks and saved data. But, I’m not here to sell you on what I love. It’s up to you what you want to do.

Thank you for being a Ghacks reader. The post Best Fixes for Firefox High CPU Usage on Windows 11 appeared first on gHacks Technology News.

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Windows 10 & 11 idle high ssd usage and high cpu usage

Hi Dushan. I'm Greg, 10 years awarded Windows MVP, specializing in Installation, Performance, Troubleshooting and Activation, here to help you.

1) Run the SSD maker's diagnostic toolkit from the Support Downloads web page for the drive model; if none then use one of these:

https://mashtips.com/ssd-health-test-and-perfor.... If it fails contact the SSD's Support under warrranty if it's within a year of purchase.

Follow this with a full Disk Check: https://www.groovypost.com/howto/check-hard-dri...

2) Fixes for high SSD usage in Windows 10 and 11:

https://thegeekpage.com/100-disk-usage/

https://nerdschalk.com/how-to-fix-100-disk-usag...

https://allthings.how/how-to-fix-windows-11-hig...

3) Fixes for high CPU usage in WIndows 11:

https://devsjournal.com/fix-high-cpu-usage-in-w...

https://allthings.how/how-to-fix-windows-11-hig...

https://www.howtoedge.com/solve-100-or-high-cpu...







4) Run System File Checker/DISM in WIndows 11:

https://www.elevenforum.com/t/use-system-file-c...

5) If that doesn't fix it then you can do a Windows 11 Repair Upgrade which reinstalls Windows while saving your files and apps in place, brings it up to the latest version by the most stable method, takes about an hour and resolves most problems: https://www.elevenforum.com/t/repair-install-wi...

Feel free to ask back any questions. Please report back results for all steps given so I know what else to suggest if necessary.

______________________________________________

Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.

 

Windows 11 High CPU usage and crashing

Hi JD. I'm Greg, 10 years awarded Windows MVP, specializing in Installation, Performance, Troubleshooting and Activation, here to help you.

1) Fixes for high CPU usage in WIndows 11:

https://www.techperiod.com/fix-100-cpu-usage-pr...



https://windowsreport.com/high-cpu-usage-window...

(Avoid ad links which intrude into editorial copy, especially avoid Restoro, PC Repair Tool and Reimage ads)

https://devsjournal.com/fix-high-cpu-usage-in-w...

https://allthings.how/how-to-fix-windows-11-hig...

https://appuals.com/fix-cpu-and-disk-100-usage-...

(Avoid ad links which intrude into editorial copy, especially avoid Restoro, PC Repair Tool and Reimage ads)

https://www.howtoedge.com/solve-100-or-high-cpu...





2) Establish a Clean Boot to see if that resolves it:

How to Perform a Clean Boot on Windows 11

3) Run System File Checker/DISM in WIndows 11:

https://www.elevenforum.com/t/use-system-file-c...

4) If that doesn't fix it then you can do a Windows 11 Repair Upgrade which reinstalls Windows while saving your files and apps in place, brings it up to the latest version by the most stable method, takes about an hour and resolves most problems: https://www.elevenforum.com/t/repair-install-wi...

Feel free to ask back any questions. Based on the results you post back I may have other suggestions if necessary.

Happy Holidays!

______________________________________________

Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.

 

High CPU and memory usage on Windows 10 with Microsoft Edge.

Wow, this reply really nailed it. For both Edge and Firefox, I monitored the CPU usage and picked a process with high CPU usage. I killed 1 process per app and the CPU went down to under an average of 10%.

One connection was Fox News (Firefox), but can't see which one was stopped in Edge.

Great suggestion!