Two monitors w/ different resolutions causing high CPU usage


  1. frozenlizard
    Posts : 3
    Windows 10
       New #1

    Two monitors w/ different resolutions causing high CPU usage


    I noticed today that Windows Explorer was using about 10-15% of my CPU. After trying a lot of different things, it seems to be caused by having two monitors with different resolutions. If I unplug either monitor, CPU usage drops to normal (below 1% for WE). If I set the monitors to duplicate instead of extend, it drops to normal. Finally, if I set my 1440p monitor to 1080p (the resolution of my secondary monitor), CPU usage drops to normal.

    Things I have tried:

    I have completely reinstalled my graphics card drivers using DDU.

    I went into selective startup and disabled things until the issue was fixed. Disabling the "shell hardware detection" service fixed the CPU usage... but of course this prevents me from having any autoplay functionality.

    Any ideas are appreciated (though I would like to avoid having to do an OS re-install at this point if possible).

    Thank you!
      My Computer
    Quote Quote

  3. JRT10
    Posts : 48
    Windows 10 1903
       New #2

    Maybe it depends on the video card are you running?

    I have a 1080gtx, running a 1080p and a 4k set, and my cpu usage idles at 1%.
      My Computer
    Quote Quote

  4. frozenlizard
    Posts : 3
    Windows 10
    Thread Starter
       New #3

    That leads me to believe there may be a driver issue of some kind, but I'm not sure which drivers it would be. I have an ROG Strix 1080Ti.
      My Computer
    Quote Quote

  6. frozenlizard
    Posts : 3
    Windows 10
    Thread Starter
       New #4

    I fixed it. I found the solution here:

    explorer.exe high CPU usage - tried everything I can think of - Win7 - Microsoft Community

    I had a desktop item on my 2nd monitor that wasn't displaying its icon. Moving it to another folder and then back again fixed its icon and reduced idle cpu usage from 10-11% to 3%.

    Weird.
      My Computer
    Quote Quote

 

  Related Discussions
My machine works fine but then at some point the fans just start humming loudly (high CPU). Process Explorer shows that the SeAccessCheckWithHint+0x1c620 thread is taking up 30%+ of CPU usage. Imgur: The magic of the Internet The above link shows...
Hello all. My new Lenovo laptop works fine so far, except for one issue. When I run WMP the CPU usage goes to 100%. It seems the culprit is a Windows Driver Foundation process. What can be done (if anything) to remedy this problem. Any...
First sorry if I post in the wrong section, since it's either graphic card or sound card. The problem as title says, whenever GPU usage hits high usage (90-100%) when playing games it will cut off the audio. I took some video of it from witcher 3...
Recently whenever I open up Update & Security in Settings, it causes Antimalware Service Executable (aka Windows Defender) to flare up in CPU usage by 10-15% and slow down everything else on my computer for the next 10 or so seconds. If I back out...
At work I use 3 physical vertical monitors and I use an application which takes screenshots of every minute each day. I need to review these screenshots later and would like to do this at home, however I only have a laptop at home and this makes...
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

 © Designer Media Ltd
All times are GMT -5. The time now is 15:57.
Find Us




Windows 10 Forums