Windows 10: Win 10 Home High DPC latency XPS 15 9570 ACPI.sys

Discus and support Win 10 Home High DPC latency XPS 15 9570 ACPI.sys in Windows 10 BSOD Crashes and Debugging to solve the problem; Hello, I have a dell XPS 15 9570, and I have big issues with on board and external audio. HW Spec: Dell XPS 15 9570, i7 8750H, 4K screen, 16g ram... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by the.rem, Jul 16, 2018.

  1. the.rem Win User

    Win 10 Home High DPC latency XPS 15 9570 ACPI.sys


    Hello,

    I have a dell XPS 15 9570, and I have big issues with on board and external audio.


    HW Spec:


    Dell XPS 15 9570, i7 8750H, 4K screen, 16g ram /512g ssd, qualcomm Killer wifi and then intel AC-9260, nVidia 1050 Ti with latest WHQL drivers, bios v1.2.2, all drivers to date as of 2018/15/07


    Symptoms:

    - audio cracks and pops with system audio when watching videos, listening to mp3/flac, playing games with built-in card,

    - audio cracks and pops with external ASIO soundcard (focusrite scarlett 18i8 2nd gen) when running pro DAW software with 256 samples buffer @48Khz or 512 buffer @96Khz


    This can damage external speakers and makes the machine unusable for live audio or even standard multimedia use.


    What I did:

    - applied all tweaks recommended by my external audio card's manufacturer https://support.focusrite.com/hc/en-gb/articles/207355205-Optimising-your-PC-for-Audio-on-Windows-10

    - ran LatencyMon and found that TCPIP.sys and ndis.sys were causing 4ms DPC latency spikes, followed by ACPI.sys 2ms and dxgkrnl.sys 1.7 ms

    - swapped the qualcom card for an intel AC-9260 which eliminated totally the TCPIP.sys and ndis.sys spikes

    - now ACPI.sys and dxgkrnl.sys are still causing 2ms DPC latency spikes

    - audio glitches are still present

    - disabled all peripherals except for keyboard, integrated graphics, trackpad, screen and storage (I disabled wifi, bluetooth, webcam, nvidia graphics, fingerprint reader, ACPI battery manager, cardreader, fall accelerometer, screen touch, etc.)

    - disabled Speed-Step/ SpeedShift and Turbo-Boost, disabled virtualisation support in the BIOS to try to minimize randomness in the behaviour

    - disabled fastboot

    - ACPI.sys latency is still culminating at 1.7ms and causing audio dropouts with either built-in or external USB asio interface

    - I've opened a support ticket over at dell with my premium support, the ticket was automatically closed a week later without anyone getting in touch with me.


    I've run out of options and am looking for help.


    This seems to be a pretty common issue with the windows 10 OS ( https://duckduckgo.com/?q=windows+10+DPC+latency+ACPI&t=canonical&atb=v102-3&ia=web) ocurring on a variety of hardware, people who were fine with either win7 or win8.1 started to have ACPI.sys latency issues after upgrading to windows 10.


    What kind of interrupt processing logic cannot take less than 1.7ms to run on a last-gen multi-GHz CPU ? Could be explained by the the crazy hard pagefault counter with ACPI.sys... Microsoft please fix this before I buy a Mac.

    :)
     
    the.rem, Jul 16, 2018
    #1

  2. Windows 10 High Dpc Latency

    I believe DPC Latency Checker does not support WIN 10. Please try LatencyMon and check.

    I had this issue so thought of sharing.
     
    GypsySoul13, Jul 16, 2018
    #2
  3. Windows 10 High Dpc Latency

    Windows 10 High Dpc Latency please help me someone
     
    donnieadler, Jul 16, 2018
    #3
  4. Win 10 Home High DPC latency XPS 15 9570 ACPI.sys

    DPC Latency High

    Hi,

    Check these:

    Solving DPC Latency Issues - Download Latency Monitor and DPC Latency Checker

    Solving DPC Latency Issues | Sweetwater

    DPC Latency Checker

    Troubleshoot Driver Problems Using DPC Latency Checker - Windows Tutorials

    DPC Latency Checker - Download

    DPC Latency Checker

    Hope this helps.

    --------------------------------------------------------------------------------------------

    Rob Brown -
    Microsoft MVP
    <- profile - Windows and Devices for IT : Bicycle - Mark Twain said it right.
     
    SpiritX MS MVP, Jul 16, 2018
    #4
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Win 10 Home High DPC latency XPS 15 9570 ACPI.sys

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