LatencyMon and DPC Latency Checked showing 1000-1500us constant with spikes higher

A

antman

Member
Joined
Sep 12, 2020
Posts
15
Hi all,

I'm experiencing small sound cracks and pops, while gaming or listening to music it's very annoying. I've tried fresh installs of Video drivers, NIC card, WLAN card, disabling devices, new audio drivers, nothing seems to work to fix this issue. I'm really not sure what to do anymore. I consider myself very technical. I'm about to boot my PC off of a thumb drive install of Windows 10 to see if it's the OS itself. I'm on the latest version of Windows 10, version 2004 19041.508.

Here are all of the details the instructions are looking for.

  • System Manufacturer - Custom, built in 2018
  • Laptop or Desktop - Desktop
  • Exact model number (if laptop, check label on bottom) n/a
  • OS ? Windows 10, version 2004 19041.508
  • x86 (32bit) or x64 (64bit)? 64 bit
  • Service pack? N/A
  • What was original installed OS on system? Windows 10 First release
  • Is the OS an OEM version (came pre-installed on system) or full retail version (YOU purchased it from retailer)? OEM
  • Age of system? (hardware) About 3 years old
  • Age of OS installation? 3 Years
  • Have you re-installed the OS? No
  • CPU i7-8700
  • RAM (brand, EXACT model, what slots are you using?) Corsair, 2x16GB Installed in Slot 1 and 2, CMK32GX4M2E3200C16
  • Video Card EVGA 1080Ti SC2
  • MotherBoard - (if NOT a laptop) ASUS Z370-I
  • Power Supply - brand & wattage (if laptop, skip this one) Corsair SF 600 - 600 Watt
  • Is driver verifier enabled or disabled? Not sure but all drivers are verified to my knowledge
  • What security software are you using? (Firewall, antivirus, antimalware, antispyware, and so forth) - built in Windows tools
  • Are you using proxy, vpn, ipfilters or similar software? no
  • Are you using Disk Image tools? (like daemon tools, alcohol 52% or 120%, virtual CloneDrive, roxio software) no
  • Are you currently under/overclocking? Are there overclocking software installed on your system? Underclocked, Intel Extreme Tuning Utility


Speccy Info:
http://speccy.piriform.com/results/Cci6rMa6cb3cieVUXHXabB1

Zip file with All other requested information
Trace msinfo32 DxDiag.zip

1600024213410.png
 
I booted to a usb drive with windows installed and found that the issue is still there..could this be bad hardware?
 
Hi!

Please explain how the monitor is connected.
It seems you are using a displayport cable to connect your monitor AG271QG on EVGA (nvidia) GeForce GTX 1080 Ti SC2.
And where are the speakers connected?
Do you receive sound from the speakers or from your monitor?
 
xilolee said:
Hi!

Please explain how the monitor is connected.
It seems you are using a displayport cable to connect your monitor AG271QG on EVGA (nvidia) GeForce GTX 1080 Ti SC2.
And where are the speakers connected?
Do you receive sound from the speakers or from your monitor?
Click to expand...
Hi xilolee,

That's correct the monitor is connected to the PC with a display port cable.

I have two sound sources,

Speakers connected to PC with an optical cable and a headset connected to a 2 to 1 3.5" connector that's plugged into the front of my PC.
 
This is the latest output from LatencyMon.

I'm starting to think this is bad hardware but what could it be? Motherboard?

_________________________________________________________________________________________________________
CONCLUSION
_________________________________________________________________________________________________________
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 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 0:26:54 (h:mm:ss) on all processors.


_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: ANTHONY-PC
OS version: Windows 10, 10.0, version 2004, build: 19041 (x64)
Hardware: System Product Name, System manufacturer
CPU: GenuineIntel Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz
Logical processors: 12
Processor groups: 1
RAM: 32703 MB total


_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 3192 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): 1328.10
Average measured interrupt to process latency (µs): 3.323477

Highest measured interrupt to DPC latency (µs): 1311.10
Average measured interrupt to DPC latency (µs): 1.316598


_________________________________________________________________________________________________________
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): 280.330201
Driver with highest ISR routine execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Highest reported total ISR routine time (%): 0.088168
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in ISRs (%) 0.093987

ISR count (execution time <250 µs): 1680548
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): 862.345238
Driver with highest DPC routine execution time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation

Highest reported total DPC routine time (%): 0.070305
Driver with highest DPC total execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 456.55 , NVIDIA Corporation

Total time spent in DPCs (%) 0.153880

DPC count (execution time <250 µs): 5482707
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 144
DPC count (execution time 1000-2000 µs): 0
DPC count (execution time 2000-4000 µs): 0
DPC count (execution time >=4000 µs): 0


_________________________________________________________________________________________________________
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: msmpeng.exe

Total number of hard pagefaults 18510
Hard pagefault count of hardest hit process: 3799
Number of processes hit: 213


_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 77.447223
CPU 0 ISR highest execution time (µs): 280.330201
CPU 0 ISR total execution time (s): 18.093596
CPU 0 ISR count: 1492619
CPU 0 DPC highest execution time (µs): 617.424185
CPU 0 DPC total execution time (s): 27.597442
CPU 0 DPC count: 4589937
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 20.382682
CPU 1 ISR highest execution time (µs): 111.104323
CPU 1 ISR total execution time (s): 0.032226
CPU 1 ISR count: 37908
CPU 1 DPC highest execution time (µs): 222.348371
CPU 1 DPC total execution time (s): 0.458691
CPU 1 DPC count: 50947
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 19.304641
CPU 2 ISR highest execution time (µs): 7.869987
CPU 2 ISR total execution time (s): 0.000259
CPU 2 ISR count: 56
CPU 2 DPC highest execution time (µs): 862.345238
CPU 2 DPC total execution time (s): 0.265859
CPU 2 DPC count: 106007
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 18.677186
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): 122.466792
CPU 3 DPC total execution time (s): 0.039309
CPU 3 DPC count: 12470
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time (s): 20.906391
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): 113.392544
CPU 4 DPC total execution time (s): 0.125545
CPU 4 DPC count: 42754
_________________________________________________________________________________________________________
CPU 5 Interrupt cycle time (s): 19.890844
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): 135.539787
CPU 5 DPC total execution time (s): 0.018233
CPU 5 DPC count: 6557
_________________________________________________________________________________________________________
CPU 6 Interrupt cycle time (s): 18.547730
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): 121.812343
CPU 6 DPC total execution time (s): 0.095702
CPU 6 DPC count: 30614
_________________________________________________________________________________________________________
CPU 7 Interrupt cycle time (s): 17.734717
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): 71.576754
CPU 7 DPC total execution time (s): 0.014786
CPU 7 DPC count: 5182
_________________________________________________________________________________________________________
CPU 8 Interrupt cycle time (s): 19.268858
CPU 8 ISR highest execution time (µs): 28.417293
CPU 8 ISR total execution time (s): 0.009052
CPU 8 ISR count: 14139
CPU 8 DPC highest execution time (µs): 156.468985
CPU 8 DPC total execution time (s): 0.108870
CPU 8 DPC count: 33103
_________________________________________________________________________________________________________
CPU 9 Interrupt cycle time (s): 19.871793
CPU 9 ISR highest execution time (µs): 69.953321
CPU 9 ISR total execution time (s): 0.069366
CPU 9 ISR count: 131664
CPU 9 DPC highest execution time (µs): 103.717105
CPU 9 DPC total execution time (s): 0.051975
CPU 9 DPC count: 15765
_________________________________________________________________________________________________________
CPU 10 Interrupt cycle time (s): 31.275898
CPU 10 ISR highest execution time (µs): 3.150063
CPU 10 ISR total execution time (s): 0.000446
CPU 10 ISR count: 810
CPU 10 DPC highest execution time (µs): 265.266917
CPU 10 DPC total execution time (s): 0.976382
CPU 10 DPC count: 573006
_________________________________________________________________________________________________________
CPU 11 Interrupt cycle time (s): 22.761518
CPU 11 ISR highest execution time (µs): 15.590226
CPU 11 ISR total execution time (s): 0.001741
CPU 11 ISR count: 3353
CPU 11 DPC highest execution time (µs): 142.654762
CPU 11 DPC total execution time (s): 0.056233
CPU 11 DPC count: 16509
_________________________________________________________________________________________________________
 
Try this:

1) Find your pci string in "Device manager, Sound, Video and game controllers", "High Definition Audio Device", properties, details tab, Property: Parent, Value: Your-PCIString

realtekpci.png

2) Open regedit and "navigate" here: Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\PCI\Your-PCIString\Device Parameters\Interrupt Management\MessageSignaledInterruptProperties

Obviously, you have to substitute the letters "Your-PCIString", in the above path, with the pci string you found at point one.

3) Change the MSISupported value, from 0 to 1. If it doesn't exist, create a new dword (32-bit value), name it MSISupported, give it 1 as value.

msisupported.png
 
Last edited:
xilolee,

I'm really not sure what that did, but I think it seems to be fixed! I haven't heard it for a few days now.. this is amazing... What does that change do?

Also, the latency is still showing around 1000us, but once in a while it'll dip down to 800.
1601949748382.png


1601949819444.png
 
Hi xilolee,

It's definitely still happening while in certain games. In windows it has stopped though. So something is still going on. What do you advise?
 

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