Windows 10 very laggy using external monitor

Discussion in 'General Questions' started by mike18, Aug 14, 2017.

  1. mike18

    mike18 Bit Poster

    Messages:
    6
    Good morning all,
    I own a 2017 15" tbMBP and have been using Parallels on it without much issue. However, when I connect my 1440p monitor to it, Windows 10 starts to get very choppy and laggy. I am just running Office suites on Windows 10 and I am not running coherence.

    Is there any way to make Windows 10 run smoother on an external monitor? I understand that VM's do not use graphics cards, but I can't believe that the issue is being caused by just the graphics card problem...can it?

    Thanks all!
     
  2. Shathish@Parallels

    Shathish@Parallels Kilo Poster

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    344
  3. mike18

    mike18 Bit Poster

    Messages:
    6
    Thank you Shathish, but what will this accomplish? What does transferring the HD from an existing VM to an empty one have to do with the lag I experience on an external monitor? It's not that files or documents are slow in opening, it's as if there is a framerate issue, i.e. I move my mouse and the pointer lags behind, I double click to open a file and it opens with dropped frames, etc.

    Please let me know, thank you.
     
  4. Arun@Parallels

    Arun@Parallels Parallels Support

    Messages:
    1,361
    Hi @mike18 , creating an empty virtual machine and transferring the hard disk to it will correct the technical glitches which might have been created the old virtual machine. Please try to do that and let us know if that helps.
     
  5. mike18

    mike18 Bit Poster

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    I followed instructions and now parallels is telling me there is no boot device available.
     
  6. Arun@Parallels

    Arun@Parallels Parallels Support

    Messages:
    1,361
    Hi @mike18 , please follow steps suggested in this article and let us know if that helps.
     
  7. AtifH

    AtifH Bit Poster

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    1
    Was the real issue resolved? I am facing same issue that the whole system becomes sluggish as soon as I connect an external monitor.
     
  8. Maria@Parallels

    Maria@Parallels Parallels Team

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    3,702
    Hi, which version of Parallels Desktop are you using?
     
  9. TerryS6

    TerryS6 Bit Poster

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    Yeah, I did everything as described in the instruction above and it worked just fine for me.
     
  10. artemh1

    artemh1

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    1
    I am following parallels instructions . We are the telling is no boot devices available.
     
  11. Maria@Parallels

    Maria@Parallels Parallels Team

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    3,702
    Did you check this KB article https://kb.parallels.com/123150?
     
  12. ChristopherD6

    ChristopherD6 Bit Poster

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    the article is now gone and says no longer applies. I still have this issue in parallels 15 and Mojave 10.14.6. Using Revit I cannot navigate at all without waiting 5 seconds to move the cursor. Works fine with no external monitor. I even created a brand new parallels install and reinstalled software and same issue. Using 2016 15" Retina MBP and old 2012 iMac as monitor. Tried another monitor and same issue. Connecting via USB-C to mini display port dongle. Im pulling my hair out. Seems to be something with graphics/resolution but settings get reset every time I restart the computer or disconnect the monitor so remembering what affects it is near impossible. Also seems to be a networking issue as I tried giving windows the wifi (bridged) and Mac the ethernet connection and its like some process is running that bogs everything down
     
  13. Maria@Parallels

    Maria@Parallels Parallels Team

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    3,702
  14. ChristopherD6

    ChristopherD6 Bit Poster

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    3
    Just submitted report. ID 322192132
     
  15. Maria@Parallels

    Maria@Parallels Parallels Team

    Messages:
    3,702
    Thanks a lot for the report.
    Jut to clarify, you saw this issue on the external monitor only?
    Only cursor doesn't work properly or you see any other lags?
     

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