Windows 10: DPC Latency + Audio popping Dell G7

Hi,

I'm experiencing DPC latency issues and audio popping on my Dell G7. The DPC latency issues are causing some recordings in my DAW to skip which can happen at any random time.

The audio popping occurs when I haven't had any audio playing for a few moments. For example: I'll play a video, hear a "pop" out of the speakers, close the video, wait a few moments, reopen the video "pop" again.

I've run Latency Monitor which is showing issues with ACPI.sys and nvlddmkm.sys (See the attached screenshot).

Online everyone seems to have tried different things with/without success.

Has anyone here had this problem before?

Windows 10 Pro
Version 1909 (OS Build 18363.778)

- - - Updated - - -

Still running Latency Monitor at the moment and nvlddmkm.sys has disappeared

:)

 

High DPC latency

I use my Dell XPS for recording and live playback but the system suffers from high DPC latency caused by ACPI driver.

I removed Dell audio drivers and installed those from RealTek with no avail. Latency is an issue because I need this computer for live recording. Please your advice.

 

Windows 10 High Dpc Latency

I'm on windows 10 and i know that i'm getting dpc latency cause of the audio skipping and popping sometimes while gaming or browsing the web

 

DPC Latency Issue - Random audio popping/crackling

I have been having audio popping/crackling for a few months now. I also get random 3-10 second intervals of pure white noise/static come out of nowhere when watching a video or listening
to music.

I'm not sure how to fix it.

I've tried:

• 
  
  Running memtest(no problems)
  
  Resetting my cpu overclock
  
  Reinstalling audio drivers, updating mobo
  
  Turning off fast startup
  
  Changing/reverting audio formats
  
  Updating graphics driver
  
  and possibly a few others I don't remember.
  

Any help would be greatly appreciated. Thank you.

Pics of Latencymon:







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The Latencymon Log:

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CONCLUSION

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Your system seems to be having difficulty handling real-time audio and other tasks. You may experience drop outs, clicks or pops due to buffer underruns. One or more DPC routines that belong to a driver
running in your system appear to be executing for too long. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates.

LatencyMon has been analyzing your system for 0:17:47 (h:mm:ss) on all processors.

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SYSTEM INFORMATION

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Computer name: SHAAN

OS version: Windows 10 , 10.0, build: 16299 (x64)

Hardware: MS-7A11, MSI, Z170A KRAIT GAMING 3X (MS-7A11)

CPU: GenuineIntel Intel(R) Core(TM) i5-6600K CPU @ 3.50GHz

Logical processors: 4

Processor groups: 1

RAM: 16344 MB total

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CPU SPEED

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Reported CPU speed: 3504 MHz

Measured CPU speed: 1 MHz (approx.)

Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.

WARNING: the CPU speed that was measured is only a fraction of the CPU speed reported. Your CPUs may be throttled back due to variable speed settings and thermal issues. It is suggested that you run a utility
which reports your actual CPU frequency and temperature.

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MEASURED INTERRUPT TO USER PROCESS LATENCIES

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The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes
the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.

Highest measured interrupt to process latency (µs): 760.402271

Average measured interrupt to process latency (µs): 2.408340

Highest measured interrupt to DPC latency (µs): 758.941083

Average measured interrupt to DPC latency (µs): 0.908718

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REPORTED ISRs

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Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.

Highest ISR routine execution time (µs): 152.708333

Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Highest reported total ISR routine time (%): 0.397360

Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in ISRs (%) 0.426395

ISR count (execution time <250 µs): 1697693

ISR count (execution time 250-500 µs): 0

ISR count (execution time 500-999 µs): 0

ISR count (execution time 1000-1999 µs): 0

ISR count (execution time 2000-3999 µs): 0

ISR count (execution time >=4000 µs): 0

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REPORTED DPCs

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DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.

Highest DPC routine execution time (µs): 1493.638699

Driver with highest DPC routine execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation

Highest reported total DPC routine time (%): 0.370589

Driver with highest DPC total execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in DPCs (%) 0.955813

DPC count (execution time <250 µs): 13269454

DPC count (execution time 250-500 µs): 0

DPC count (execution time 500-999 µs): 337

DPC count (execution time 1000-1999 µs): 24

DPC count (execution time 2000-3999 µs): 0

DPC count (execution time >=4000 µs): 0

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REPORTED HARD PAGEFAULTS

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Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires
reading in the memory from disk while the process is interrupted and blocked from execution.

Process with highest pagefault count: none

Total number of hard pagefaults 0

Hard pagefault count of hardest hit process: 0

Highest hard pagefault resolution time (µs): 0.0

Total time spent in hard pagefaults (%): 0.0

Number of processes hit: 0

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PER CPU DATA

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CPU 0 Interrupt cycle time (s): 67.692004

CPU 0 ISR highest execution time (µs): 152.708333

CPU 0 ISR total execution time (s): 17.89080

CPU 0 ISR count: 1593621

CPU 0 DPC highest execution time (µs): 1493.638699

CPU 0 DPC total execution time (s): 31.076181

CPU 0 DPC count: 9917883

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CPU 1 Interrupt cycle time (s): 15.246016

CPU 1 ISR highest execution time (µs): 105.669521

CPU 1 ISR total execution time (s): 0.311294

CPU 1 ISR count: 100636

CPU 1 DPC highest execution time (µs): 339.543379

CPU 1 DPC total execution time (s): 8.243974

CPU 1 DPC count: 2894304

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CPU 2 Interrupt cycle time (s): 5.443245

CPU 2 ISR highest execution time (µs): 9.460046

CPU 2 ISR total execution time (s): 0.003366

CPU 2 ISR count: 3436

CPU 2 DPC highest execution time (µs): 100.865297

CPU 2 DPC total execution time (s): 0.713309

CPU 2 DPC count: 232278

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CPU 3 Interrupt cycle time (s): 5.146945

CPU 3 ISR highest execution time (µs): 0.0

CPU 3 ISR total execution time (s): 0.0

CPU 3 ISR count: 0

CPU 3 DPC highest execution time (µs): 112.364726

CPU 3 DPC total execution time (s): 0.776172

CPU 3 DPC count: 225350

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