Solved Surface Book (Maybe SP4) camera drivers (Intel AVStream) causing insanely high DPC latency!

Discussion in 'Microsoft Surface Book' started by Vbman213, Dec 1, 2015.

  1. Vbman213

    Vbman213 New Member

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    My Device:
    Surface Book
    Noticed some audio distortion when my camera was enabled.

    Installed LatencyMon to measure DPC latency.

    Here are my results:

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    The first two images are taken with the camera disabled/off

    The last two images are taken with the camera enabled/on
     
  2. GreyFox7

    GreyFox7 Super Moderator Staff Member

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    Which Camera? Infrared or Regular? do you have Windows Hello on?
     
  3. Vbman213

    Vbman213 New Member

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    My Device:
    Surface Book
    Regular camera, front or back.

    I performed this test using the built in camera app

    Edit: I tested with Windows Hello on and off. Same results. Same latency
     
    Last edited: Dec 2, 2015
  4. GreyFox7

    GreyFox7 Super Moderator Staff Member

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    I guess this is what we should expect from the Fail Forward Fast era mentality... a lot of mistakes.
     
  5. Vbman213

    Vbman213 New Member

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    My Device:
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