Windows 10 DPC Routines executing for Too Long, Popping Noises and Stutter

  • Thread starter Thread starter BurkeZerk
  • Start date Start date
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BurkeZerk

For about 3 months, I have been having problems with the Stutter of all applications on the system, from startup that sometimes randomly went away after leaving the computer on for a while. I have been looking for a solution for a while now and decided to post here. I have updated BIOS, all The Drivers, and nothing has worked yet.


My system specs are as follows:

OS: Windows 10 Pro 64bit, Version 10.0.19042

Motherboard: Gigabyte Z170X-UD3-CF

CPU: Intel i7-6700 CPU @ 3.40GHz

GPU: NVIDIA Geforce RTX 3070

RAM: 32 GB


I have the Transcripts from Latency Monitor below, as recommended in Other Threads.

_________________________________________________________________________________________________________

CONCLUSION
_________________________________________________________________________________________________________
Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. 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 0:02:05 (h:mm:ss) on all processors.


_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: DESKTOP-EKP474R
OS version: Windows 10, 10.0, version 2009, build: 19042 (x64)
Hardware: Z170X-UD3, Gigabyte Technology Co., Ltd.
CPU: GenuineIntel Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz
Logical processors: 8
Processor groups: 1
RAM: 32723 MB total


_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 3408 MHz

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.


_________________________________________________________________________________________________________
MEASURED INTERRUPT TO USER PROCESS LATENCIES
_________________________________________________________________________________________________________
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): 101839.60
Average measured interrupt to process latency (µs): 153.279278

Highest measured interrupt to DPC latency (µs): 101821.90
Average measured interrupt to DPC latency (µs): 149.776974


_________________________________________________________________________________________________________
REPORTED ISRs
_________________________________________________________________________________________________________
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): 402.865023
Driver with highest ISR routine execution time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation

Highest reported total ISR routine time (%): 0.019381
Driver with highest ISR total time: portcls.sys - Port Class (Class Driver for Port/Miniport Devices), Microsoft Corporation

Total time spent in ISRs (%) 0.027332

ISR count (execution time <250 µs): 37101
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-1000 µs): 1
ISR count (execution time 1000-2000 µs): 0
ISR count (execution time 2000-4000 µs): 0
ISR count (execution time >=4000 µs): 0


_________________________________________________________________________________________________________
REPORTED DPCs
_________________________________________________________________________________________________________
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): 101852.117371
Driver with highest DPC routine execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation

Highest reported total DPC routine time (%): 0.497464
Driver with highest DPC total execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation

Total time spent in DPCs (%) 0.648642

DPC count (execution time <250 µs): 101499
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 6
DPC count (execution time 1000-2000 µs): 0
DPC count (execution time 2000-4000 µs): 0
DPC count (execution time >=4000 µs): 49


_________________________________________________________________________________________________________
REPORTED HARD PAGEFAULTS
_________________________________________________________________________________________________________
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.

NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.

Process with highest pagefault count: mmc.exe

Total number of hard pagefaults 1717
Hard pagefault count of hardest hit process: 624
Number of processes hit: 26


_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 8.737402
CPU 0 ISR highest execution time (µs): 402.865023
CPU 0 ISR total execution time (s): 0.270292
CPU 0 ISR count: 36554
CPU 0 DPC highest execution time (µs): 101852.117371
CPU 0 DPC total execution time (s): 5.276953
CPU 0 DPC count: 90277
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 0.565103
CPU 1 ISR highest execution time (µs): 43.240023
CPU 1 ISR total execution time (s): 0.003125
CPU 1 ISR count: 548
CPU 1 DPC highest execution time (µs): 108.319249
CPU 1 DPC total execution time (s): 0.024446
CPU 1 DPC count: 1463
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 2.120413
CPU 2 ISR highest execution time (µs): 0.0
CPU 2 ISR total execution time (s): 0.0
CPU 2 ISR count: 0
CPU 2 DPC highest execution time (µs): 101114.464789
CPU 2 DPC total execution time (s): 0.442919
CPU 2 DPC count: 4203
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 0.416059
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): 69.682512
CPU 3 DPC total execution time (s): 0.002113
CPU 3 DPC count: 380
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time (s): 1.583188
CPU 4 ISR highest execution time (µs): 0.0
CPU 4 ISR total execution time (s): 0.0
CPU 4 ISR count: 0
CPU 4 DPC highest execution time (µs): 101334.382042
CPU 4 DPC total execution time (s): 0.423381
CPU 4 DPC count: 2799
_________________________________________________________________________________________________________
CPU 5 Interrupt cycle time (s): 0.987304
CPU 5 ISR highest execution time (µs): 0.0
CPU 5 ISR total execution time (s): 0.0
CPU 5 ISR count: 0
CPU 5 DPC highest execution time (µs): 42.558685
CPU 5 DPC total execution time (s): 0.003009
CPU 5 DPC count: 455
_________________________________________________________________________________________________________
CPU 6 Interrupt cycle time (s): 1.375814
CPU 6 ISR highest execution time (µs): 0.0
CPU 6 ISR total execution time (s): 0.0
CPU 6 ISR count: 0
CPU 6 DPC highest execution time (µs): 101331.683685
CPU 6 DPC total execution time (s): 0.211070
CPU 6 DPC count: 1374
_________________________________________________________________________________________________________
CPU 7 Interrupt cycle time (s): 0.710680
CPU 7 ISR highest execution time (µs): 0.0
CPU 7 ISR total execution time (s): 0.0
CPU 7 ISR count: 0
CPU 7 DPC highest execution time (µs): 100716.073357
CPU 7 DPC total execution time (s): 0.104921
CPU 7 DPC count: 603
_________________________________________________________________________________________________________

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