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I am suffering a very high CPU utilization on desktop window manager process - up to 90-95 percent.

Apart of it, no other process consumes more than 5%.

How can I solve it?

My main computer details:

Windows 10 Pro, Intel i7-5500U CPU 2.4G, Installed RAM 8G, 64Bit

  • Have you updated Windows and your graphic drivers to the latest version ? – nex84 Feb 19 '16 at 11:11
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    install the WPT (part of the Win10 SDK: dev.windows.com/en-us/downloads/windows-10-sdk), run WPRUI.exe, select first level and under resource CPU usage. Now click on start, capture 1 minute of the CPU usage. Now compress the larger ETL file as 7z/RAR, upload it to OneDrive, create a share link and post the link here. I'll see analyze it and look why DWM causes such a high CPU usage – magicandre1981 Feb 19 '16 at 16:43
  • @magicandre1981 I hope the link is ok: onedrive.live.com/redir?resid=E102BB67D916556D%212896 . Thank you! – dushkin Feb 19 '16 at 22:25
  • ok, I got the file and posted the answer. – magicandre1981 Feb 20 '16 at 7:24
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I checked the ETL file with WPA and saw that indeed the Intel GPU driver igd10iumd64.dll causes the CPU usage by calling the functions ntdll.dll!RtlLeaveCriticalSection and ntdll.dll!RtlEnterCriticalSection very often.

enter image description here

Your Intel driver has version 10.18.15.4256, which is a bit older. Try the newer driver 4300 or the latest Beta driver 4380.

| improve this answer | |
  • I updated to 4300. I will update if I will see the problem again. Thank you! – dushkin Feb 20 '16 at 12:13
  • Meanwhile CPU is about 5% !!! – dushkin Feb 20 '16 at 20:38
  • In my case it was my Nvidia drivers that needed to be updated. Thanks for the help. – oskar132 Nov 30 '16 at 8:59

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