Ways to Fix High CPU Usage by DWM.EXE on Windows 10!


Desktop Windows Manager is a manager that takes care of the visual effects on your desktop. In Windows 10, the latest version of Windows, it is in charge of managing glass window frames, high-resolution support, 3D window transition animations, and other things. Microsoft says that this process is always going on in the background and needs a certain amount of processor to work. But a lot of users said that the service itself took up a lot of CPU. Since every computer is set up differently and it’s hard to make the same conditions every time, this could be caused by a number of things. We have given you a list of ways to solve the problem. Take a look.

What Is a Desktop Window Manager?

The Desktop Window Manager is a useful tool that lets Windows operating systems support high-resolution monitors and show visual effects like transparency on the user interface. It works by using hardware acceleration and running in the background as dwm.exe. So, a certain amount of processor will be used.

Also Read: Ways to Fix Error 0xc1900101 Occur During Windows 11 Installation

But you might not even know that Desktop Window Manager is running, let alone how much CPU it uses, right? Users have said that it’s annoying when Desktop Window Manager takes up a lot of CPU. 2% to 3% of the CPU and 50MB to 100MB of memory are needed for dwm.exe to run in the background. The exact amount is different for each system. But there are a lot of things that can use up too much CPU. For example, there could be too many things going on at once.

What Are the Main Reasons of Windows 10 Desktop Window Manager Using High CPU?

  • Your system is running too many tabs at once.
  • Your system doesn’t work with the driver for your screen.
  • Some things don’t work right with Windows 10.
  • There was a problem with some of the software or apps you use.

Different Ways to Fix High CPU Usage by DWM.EXE

Many people brought up the fact that dwm.exe used a lot of CPU: Desktop Window Manager uses a lot of RAM or a lot of the computer’s resources. It will slow down the system or make it suddenly freeze or crash. Because of this, you should read on to find out how to fix Desktop Window Manager high memory.

fix high CPU usage by dwm.exe on Windows 10

Way 1: Disable The Screensaver

If Desktop Window Manager is taking up a lot of resources, try changing your wallpaper or theme to see if that helps. If you have a Screensaver on, turn it off and see what happens. Change all of your Personalization settings, like your Lock Screen, Color Profiles, etc., and see if that fixes the problem.

  • Press Windows + S to bring up the search bar in your start menu. Type “lock screen settings” into the box and hit “enter.”
  • Just click on the first one that comes up. You’ll be taken to the screen where you can change how your computer locks.
  • At the bottom of the screen, look for “Screensaver settings” and click on it.
  • There’s a chance that your computer is using the screensaver that came with it. Many users said that when the screensaver was on, the background was black, which made it hard to tell if it was a screensaver or not. Make sure it’s off, and then try to figure out what’s wrong again.

Also Read: How to Fix the Windows PxHlpa64.sys Memory Integrity error?

Way 2: Changing The Wallpaper

Since your desktop window manager controls your wallpaper and theme, it’s possible that your current settings are what’s using so many resources. We can try changing the background or theme to see if that helps.

  • Pressing Windows + I will open the Settings app.
  • When you’re on the page where you can change settings, click “Personalization.”
  • Now, change your current theme and wallpaper using the settings and see if that helps.

Way 3: Check Adjust for Best Performance

You can also find the Performance Options window and open it. Click on the Visual Effects tab to change how the effects look. Choose the radio button that says “Adjust the system so it works best.”

  • You can get to the Control Panel in Windows 10.
  • You can choose the System and the Security.
  • Type “performance” into the search box in the upper right corner.
  • Click the link under “System” to change the way Windows looks and how it works.
  • Check the box next to Adjust for best performance in the Performance Options window.
  • Click the OK button to make sure.
  • To get the best results, make changes.

Way 4: Run the Performance Troubleshooter

Do a “Clean Boot,” and then try to find the process that is making dwm.exe work poorly by hand.

  • Start Windows Search up.
  • Type cmd in the text box.
  • Right-click on Command Prompt and choose “Run as administrator.”
  • Type msdt.exe /id PerformanceDiagnostic and hit the Enter key.
  • Click Next in the Performance window to move on.
  • Just wait until the problem has been solved.

fix high CPU usage by dwm.exe on Windows 10

Way 5: Turn Off Hardware Acceleration for Microsoft Office Products

  • Press Windows + R to open Run.
  • Hit Enter after typing regedit.
  • Copy Computer\HKEY_CURRENT_USER\Software\Microsoft\Avalon.Graphics and paste it in the address bar of the Registry Editor.
  • Then, press OK to choose the Avalon.
  • Key to graphics.
  • Right-click on the empty space in the right pane and select New -> DWORD (64-bit) Value/ DWORD (32-bit) Value (depending on your system).
  • The new value should be called “DisableHWAcceleration.”
  • Change the Value to 1 by double-clicking on DisableHWAcceleration.
  • Click the OK button to make sure.
  • Now, you can close the Registry Editor.

Also Read: Microsoft Will Support Windows 11 on Mac! Let’s Check How to Run It.

Way 6: Checking for Malware

Malware or a virus on your computer can sometimes make it do strange things. They might have special scripts that run in the background to get your information or change the settings.

  • Scan your computer with your antivirus software to make sure it is clean.
  • Windows Defender can be used to scan if you don’t already have an antivirus program.
  • If you press Windows + S, the search bar will appear in the start menu.
  • Type “Windows Defender” and then click on the first result that comes up.
  • On the right side of the screen, you’ll see a scan button.
  • Click the Scan button and choose the full scan. This could take a while because Windows has to check each file on your computer one at a time.
  • Be patient and let things happen as they should.
  • At the end, restart your computer to see if the problem is fixed.


The Desktop Window Manager on the PC uses a lot of the CPU. How to tell if Desktop Window Manager is taking up a lot of memory Open Task Manager in Windows 10, find the dwm.exe process, and see how much CPU is being used.

Desktop Window Manager can use a lot of CPU for many reasons, but you can fix it by changing the wallpaper or theme, turning off the screen saver, etc. If none of the above ideas worked, we could try removing some programs. We found that the problem seemed to be caused by a few different apps after talking to a lot of people and looking at a lot of cases.

Some of them are SetPoint, OneDrive, and others. Also, stop your antivirus software or temporarily turn it off, and check how much CPU is being used. Look for programs that are changing your desktop, and based on what you find, make a decision.

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