Windows 10: ACPI driver causing abnormally high Latency on Dell XPS 15 9570

Discus and support ACPI driver causing abnormally high Latency on Dell XPS 15 9570 in Windows 10 Drivers and Hardware to solve the problem; ACPI is causing high DPC latency, concerns over live recording capabilities and live playback. I have uninstalled stock Dell audio drivers and... Discussion in 'Windows 10 Drivers and Hardware' started by DanielBlanton1, Apr 18, 2019.

  1. ACPI driver causing abnormally high Latency on Dell XPS 15 9570


    ACPI is causing high DPC latency, concerns over live recording capabilities and live playback.

    I have uninstalled stock Dell audio drivers and installed RealTek drivers (not sure which ones), this has fixed popping sounds coming from the speakers or headphones.

    I need to use this laptop for live recording and live playback of music for a live band, latency cannot be an issue I should have, can you advice on how to fix this?

    :)
     
    DanielBlanton1, Apr 18, 2019
    #1

  2. ACPI driver causing abnormally high Latency on Dell XPS 15 9570

    ACPI is causing high DPC latency, concerns over live recording capabilities and live playback.

    I have uninstalled stock Dell audio drivers and installed RealTek drivers (not sure which ones), this has fixed popping sounds coming from the speakers or headphones.

    I need to use this laptop for live recording and live playback of music for a live band, latency cannot be an issue I should have, can you advice on how to fix this?

    I have read on older forums that disabling the ACPI.sys process could solve the issue but with varying success as some users on that forum returned saying that they had to completely reinstall Windows 7 (forum from 2012).

    Many thanks,

    EDIT:

    I should probably add that the latency times I am getting according to DPC Latency Checker are a Maximum of 5114 Micro Seconds and an average of 1500 micro seconds.

    LatencyMon is reporting lower numbers at 2698 micro seconds. This application is stating
    ACPI.sys - ACPI Driver for NT being the issue.
     
    RyanSchippers, Apr 18, 2019
    #2
  3. Rohit_R Win User
    ACPI driver causing abnormally high Latency on Dell XPS 15 9570

    Hi,



    Thank you for writing to Microsoft Community Forums.



    I understand it can be frustrating when your devices get into such situation, but we will try to get it sorted for you.



    You can try the following steps and check if this fixes the issue:

    Method 1: Update power drivers.

    Refer to the article:
    Update drivers in Windows 10


    Look for the section Batteries>Microsoft ACPI-Compliant Control Method battery.



    Method 2: Put the power management setting to max/high.

    1. Type
    Control panel in Windows search bar and press Enter.

    2. Type
    Power Options in control panel’s search bar and select the option.

    3. Click on
    show additional plans, select High performance option and click on
    Change plan settings option.

    4. On the popup window, find the following sections and set them to 100%:

    Processor power management> Minimum processor state

    On battery to
    100%

    Plugged in to
    100%

    If this didn’t fix the issue, please check with Method 3.



    Method 3: Start the computer in Clean boot.

    Refer to the article:
    How to perform a clean boot in Windows




    Disclaimer: A “clean boot” starts Windows with a minimal set of drivers and startup programs, so that you can determine whether a background program is interfering with your game or program.

    Your computer may temporarily lose some functionality while in a clean boot environment, however that functionality will return when you reset the computer to start normally after you have finished your troubleshooting.



    If the issue still persists, please reply to us with the complete report of the Latency Monitoring so that we can check this for you and assist you with appropriate steps.

    We await your response.



    Rohit Raina

    Microsoft Community - Moderator
     
    Rohit_R, Apr 18, 2019
    #3
  4. the.rem Win User

    ACPI driver causing abnormally high Latency on Dell XPS 15 9570

    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, Apr 18, 2019
    #4
Thema:

ACPI driver causing abnormally high Latency on Dell XPS 15 9570

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