Question audio + video goes into "stuttery slow motion" ?

yuriythebest

Distinguished
Feb 10, 2008
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Hi Guys! This last while my Win10 64 bit 32gb ram + E5-2665 xeon PC has started experiencing an annoying issue: video/audio playback sometimes stutters/goes into a sort of unpleasant stuttery slow motion, which last a few seconds and then it goes back to normal, until again in 5-10-30 seconds it does the same. I've noticed it's definitely linked to either cpu\hdd usage, since the issue always tends to occur when I do something like open a new webpage, but it also just occurs randomly as well.
What can I do to troubleshoot this?
thanks in advance!
 
Dec 4, 2021
3
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10
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Ive got the same issue, my LatencyMon says its with HDAudbus.sys I have been trying to find a fix for 2 days straight now, but to no avail.
_
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 ISR 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 0:00:46 (h🇲🇲ss) on all processors.


_
SYSTEM INFORMATION
_
Computer name: DESKTOP-LRPLGT2
OS version: Windows 10, 10.0, version 2009, build: 19044 (x64)
Hardware: System Product Name, System manufacturer
BIOS: 1006
CPU: GenuineIntel Intel(R) Core(TM) i5-7400 CPU @ 3.00GHz
Logical processors: 4
Processor groups: 1
Processor group size: 4
RAM: 16326 MB total


_
CPU SPEED
_
Reported CPU speed (WMI): 220 MHz
Reported CPU speed (registry): 30 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): 622.20
Average measured interrupt to process latency (µs): 7.642079

Highest measured interrupt to DPC latency (µs): 580.10
Average measured interrupt to DPC latency (µs): 2.664289


_
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): 19608.226667
Driver with highest ISR routine execution time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation

Highest reported total ISR routine time (%): 0.031261
Driver with highest ISR total time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation

Total time spent in ISRs (%) 0.040791

ISR count (execution time <250 µs): 13339
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-1000 µs): 0
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): 771.975667
Driver with highest DPC routine execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Highest reported total DPC routine time (%): 0.222871
Driver with highest DPC total execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in DPCs (%) 0.495655

DPC count (execution time <250 µs): 95902
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 244
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: system

Total number of hard pagefaults 10561
Hard pagefault count of hardest hit process: 4097
Number of processes hit: 46


_
PER CPU DATA
_
CPU 0 Interrupt cycle time (s): 1.717922
CPU 0 ISR highest execution time (µs): 19608.226667
CPU 0 ISR total execution time (s): 0.073285
CPU 0 ISR count: 12787
CPU 0 DPC highest execution time (µs): 771.975667
CPU 0 DPC total execution time (s): 0.749703
CPU 0 DPC count: 67825
_
CPU 1 Interrupt cycle time (s): 0.518867
CPU 1 ISR highest execution time (µs): 11.341333
CPU 1 ISR total execution time (s): 0.001962
CPU 1 ISR count: 426
CPU 1 DPC highest execution time (µs): 164.476333
CPU 1 DPC total execution time (s): 0.074481
CPU 1 DPC count: 14425
_
CPU 2 Interrupt cycle time (s): 0.578683
CPU 2 ISR highest execution time (µs): 5.148333
CPU 2 ISR total execution time (s): 0.000206
CPU 2 ISR count: 95
CPU 2 DPC highest execution time (µs): 242.571333
CPU 2 DPC total execution time (s): 0.055104
CPU 2 DPC count: 7877
_
CPU 3 Interrupt cycle time (s): 0.437801
CPU 3 ISR highest execution time (µs): 8.9470
CPU 3 ISR total execution time (s): 0.000239
CPU 3 ISR count: 32
CPU 3 DPC highest execution time (µs): 284.779333
CPU 3 DPC total execution time (s): 0.040449
CPU 3 DPC count: 6019
_
 
Ive got the same issue, my LatencyMon says its with HDAudbus.sys I have been trying to find a fix for 2 days straight now, but to no avail.
_
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 ISR 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 0:00:46 (h🇲🇲ss) on all processors.


_
SYSTEM INFORMATION
_
Computer name: DESKTOP-LRPLGT2
OS version: Windows 10, 10.0, version 2009, build: 19044 (x64)
Hardware: System Product Name, System manufacturer
BIOS: 1006
CPU: GenuineIntel Intel(R) Core(TM) i5-7400 CPU @ 3.00GHz
Logical processors: 4
Processor groups: 1
Processor group size: 4
RAM: 16326 MB total


_
CPU SPEED
_
Reported CPU speed (WMI): 220 MHz
Reported CPU speed (registry): 30 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): 622.20
Average measured interrupt to process latency (µs): 7.642079

Highest measured interrupt to DPC latency (µs): 580.10
Average measured interrupt to DPC latency (µs): 2.664289


_
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): 19608.226667
Driver with highest ISR routine execution time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation

Highest reported total ISR routine time (%): 0.031261
Driver with highest ISR total time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation

Total time spent in ISRs (%) 0.040791

ISR count (execution time <250 µs): 13339
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-1000 µs): 0
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): 771.975667
Driver with highest DPC routine execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Highest reported total DPC routine time (%): 0.222871
Driver with highest DPC total execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in DPCs (%) 0.495655

DPC count (execution time <250 µs): 95902
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 244
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: system

Total number of hard pagefaults 10561
Hard pagefault count of hardest hit process: 4097
Number of processes hit: 46


_
PER CPU DATA
_
CPU 0 Interrupt cycle time (s): 1.717922
CPU 0 ISR highest execution time (µs): 19608.226667
CPU 0 ISR total execution time (s): 0.073285
CPU 0 ISR count: 12787
CPU 0 DPC highest execution time (µs): 771.975667
CPU 0 DPC total execution time (s): 0.749703
CPU 0 DPC count: 67825
_
CPU 1 Interrupt cycle time (s): 0.518867
CPU 1 ISR highest execution time (µs): 11.341333
CPU 1 ISR total execution time (s): 0.001962
CPU 1 ISR count: 426
CPU 1 DPC highest execution time (µs): 164.476333
CPU 1 DPC total execution time (s): 0.074481
CPU 1 DPC count: 14425
_
CPU 2 Interrupt cycle time (s): 0.578683
CPU 2 ISR highest execution time (µs): 5.148333
CPU 2 ISR total execution time (s): 0.000206
CPU 2 ISR count: 95
CPU 2 DPC highest execution time (µs): 242.571333
CPU 2 DPC total execution time (s): 0.055104
CPU 2 DPC count: 7877
_
CPU 3 Interrupt cycle time (s): 0.437801
CPU 3 ISR highest execution time (µs): 8.9470
CPU 3 ISR total execution time (s): 0.000239
CPU 3 ISR count: 32
CPU 3 DPC highest execution time (µs): 284.779333
CPU 3 DPC total execution time (s): 0.040449
CPU 3 DPC count: 6019
_
your audio and storage driver needs to be updated
 
Dec 4, 2021
3
0
10
0
your audio and storage driver needs to be updated
So I updated all possible drivers, I'm on the latest Realtek audio drivers, and what do you mean by Storage drivers? Like the actual drivers for my Samsung SSD? Because I installed the storage controllers ''Intel(R) C600+/C220+ series chipset SATA AHCI Controller''






_
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. Also one or more
ISR 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 0:00:23 (h🇲🇲ss) on all processors.


_
SYSTEM INFORMATION
_
Computer name: DESKTOP-LRPLGT2
OS version: Windows 10, 10.0, version 2009, build: 19044 (x64)
Hardware: System Product Name, System manufacturer
BIOS: 1006
CPU: GenuineIntel Intel(R) Core(TM) i5-7400 CPU @ 3.00GHz
Logical processors: 4
Processor groups: 1
Processor group size: 4
RAM: 16326 MB total


_
CPU SPEED
_
Reported CPU speed (WMI): 3001 MHz
Reported CPU speed (registry): 30 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): 246.10
Average measured interrupt to process latency (µs): 6.358299

Highest measured interrupt to DPC latency (µs): 241.30
Average measured interrupt to DPC latency (µs): 3.093213


_
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): 24134.5650
Driver with highest ISR routine execution time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation

Highest reported total ISR routine time (%): 0.329181
Driver with highest ISR total time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation

Total time spent in ISRs (%) 0.340328

ISR count (execution time <250 µs): 9360
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-1000 µs): 0
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): 23266.9720
Driver with highest DPC routine execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Highest reported total DPC routine time (%): 0.165835
Driver with highest DPC total execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in DPCs (%) 0.382627

DPC count (execution time <250 µs): 41552
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 0
DPC count (execution time 1000-2000 µs): 0
DPC count (execution time 2000-4000 µs): 0
DPC count (execution time >=4000 µs): 2


_
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: brave.exe

Total number of hard pagefaults 42
Hard pagefault count of hardest hit process: 27
Number of processes hit: 10


_
PER CPU DATA
_
CPU 0 Interrupt cycle time (s): 1.006860
CPU 0 ISR highest execution time (µs): 24134.5650
CPU 0 ISR total execution time (s): 0.237188
CPU 0 ISR count: 8821
CPU 0 DPC highest execution time (µs): 23266.9720
CPU 0 DPC total execution time (s): 0.295326
CPU 0 DPC count: 31859
_
CPU 1 Interrupt cycle time (s): 0.218002
CPU 1 ISR highest execution time (µs): 21437.807667
CPU 1 ISR total execution time (s): 0.051668
CPU 1 ISR count: 234
CPU 1 DPC highest execution time (µs): 140.908667
CPU 1 DPC total execution time (s): 0.026939
CPU 1 DPC count: 5016
_
CPU 2 Interrupt cycle time (s): 0.119285
CPU 2 ISR highest execution time (µs): 10.519333
CPU 2 ISR total execution time (s): 0.000529
CPU 2 ISR count: 242
CPU 2 DPC highest execution time (µs): 116.077333
CPU 2 DPC total execution time (s): 0.019089
CPU 2 DPC count: 2470
_
CPU 3 Interrupt cycle time (s): 0.199174
CPU 3 ISR highest execution time (µs): 19584.839333
CPU 3 ISR total execution time (s): 0.025635
CPU 3 ISR count: 83
CPU 3 DPC highest execution time (µs): 154.5430
CPU 3 DPC total execution time (s): 0.012820
CPU 3 DPC count: 2209
_
 

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