Remote Desktop Services causes High CPU in Windows 10 when using Magnifier app
If you notice high CPU usage by dwm.exe when using the Magnifier app over a Remote Desktop Protocol (RDP) connection to a Windows 10 computer, this message is intended to help you. In this article, we will identify the potential cause of this problem and provide the solution that you can try to alleviate.
Let’s see a typical scenario where you may experience this high CPU usage problem.
When you use the Magnifier app on a remote Windows 10 computer through a Remote Desktop Protocol (RDP) session, the CPU usage of dwm.exe increases. This happens when smoothing is activated in the magnifying glass. This feature is enabled by default in Windows 10.
To improve performance, turn off smoothing in the Magnifier application.
After you complete this action, the high CPU usage by dwm.exe when using the Magnifier app over a Remote Desktop Protocol (RDP) connection to a Windows 10 computer should be resolved.
Office Window Manager (dwm.exe)
Desktop Window Manager (DWM, formerly Desktop Compositing Engine or DCE) is the Windows 10/8/7 / Vista window manager that allows you to use hardware acceleration to render the Windows GUI. DWM.exe renders all of these visual effects in Windows like transparent windows, live taskbar thumbnails, Flip3D Alt-tab window switch and even high resolution monitor support.