Windows audio crackling issue

[rodak]

Hello.

Since I changed my motherboard and CPU to MSI z97-G43 and Intel i7 4790k I've begun to experience audio crackling while watching vidoes or quick overlapping of sounds. Crackling appears mostly when I rewind YouTube movies, move volume slider up & down or even when I quick hit test sound in sndvol32 to make the sound overlap. Before that I was using ASRock Extreme 970 r2 mobo and AMD FX 6300, rest of the setup was the same and everythink worked fine.
My graphic card: GTX 550Ti
My system: Windows 7 SP1, I've also tried Windows 10 with same effect.
I'm using PCIe audio card (M-Audio Audiophile 192), but I've also tried putting it off and using MSI z97-G43's integrated audio card and I'm having the same audio crackling issue so it looks like its not audio card's fault.
I have tried installing in diffrent PCIe slots, changing windows power managment plan to performance, disabled all power saving features, EIST, C states, PCI gen to 1,2,3, PCI latency timers.
I reinstalled my Windows about 5 times and tried on fresh OS nothing helpedl, I ve tried with SP1 and without it, installed all INTEL drivers and without them. All drivers are up to date.
I've tried removing GTX 550Ti and using INTEL integraded graphics - didn't help.
Tried using HPET on and off - didn't help.

I've lost hope because I thought using i7 processor will make system 100% stable, latency free.
I would be grateful for your help

Read More:

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CONCLUSION
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Your system appears to be suitable for handling real-time audio and other tasks without dropouts.
LatencyMon has been analyzing your system for 0:06:29 (h:mm:ss) on all processors.


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SYSTEM INFORMATION
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Computer name: ADMIN-KOMPUTER
OS version: Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
Hardware: MS-7816, MSI, Z97-G43 (MS-7816)
CPU: GenuineIntel Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz
Logical processors: 8
Processor groups: 1
RAM: 4044 MB total


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CPU SPEED
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Reported CPU speed: 40 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): 76,799430
Average measured interrupt to process latency (µs): 1,652253

Highest measured interrupt to DPC latency (µs): 75,775437
Average measured interrupt to DPC latency (µs): 0,613698


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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): 170,6210
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Highest reported total ISR routine time (%): 0,01520
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in ISRs (%) 0,020042

ISR count (execution time <250 µs): 124307
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


_________________________________________________________________________________________________________
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): 66,480
Driver with highest DPC routine execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 355.60 , NVIDIA Corporation

Highest reported total DPC routine time (%): 0,011937
Driver with highest DPC total execution time: iaStorA.sys - Intel(R) Rapid Storage Technology driver - x64, Intel Corporation

Total time spent in DPCs (%) 0,040175

DPC count (execution time <250 µs): 632099
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 0
DPC count (execution time 1000-1999 µs): 0
DPC count (execution time 2000-3999 µs): 0
DPC count (execution time >=4000 µs): 0


_________________________________________________________________________________________________________
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.

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: svchost.exe

Total number of hard pagefaults 5193
Hard pagefault count of hardest hit process: 1431
Highest hard pagefault resolution time (µs): 232610,0990
Total time spent in hard pagefaults (%): 0,783488
Number of processes hit: 26


_________________________________________________________________________________________________________
PER CPU DATA
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CPU 0 Interrupt cycle time (s): 2,177367
CPU 0 ISR highest execution time (µs): 170,6210
CPU 0 ISR total execution time (s): 0,624593
CPU 0 ISR count: 124307
CPU 0 DPC highest execution time (µs): 66,480
CPU 0 DPC total execution time (s): 1,210644
CPU 0 DPC count: 569663
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 0,138603
CPU 1 ISR highest execution time (µs): 0,0
CPU 1 ISR total execution time (s): 0,0
CPU 1 ISR count: 0
CPU 1 DPC highest execution time (µs): 0,0
CPU 1 DPC total execution time (s): 0,0
CPU 1 DPC count: 0
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 0,169566
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): 8,950
CPU 2 DPC total execution time (s): 0,009586
CPU 2 DPC count: 19540
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CPU 3 Interrupt cycle time (s): 0,148554
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): 0,0
CPU 3 DPC total execution time (s): 0,0
CPU 3 DPC count: 0
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time (s): 0,193174
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): 33,0760
CPU 4 DPC total execution time (s): 0,013496
CPU 4 DPC count: 18015
_________________________________________________________________________________________________________
CPU 5 Interrupt cycle time (s): 0,133718
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): 0,0
CPU 5 DPC total execution time (s): 0,0
CPU 5 DPC count: 0
_________________________________________________________________________________________________________
CPU 6 Interrupt cycle time (s): 0,188472
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): 33,9810
CPU 6 DPC total execution time (s): 0,018292
CPU 6 DPC count: 24881
_________________________________________________________________________________________________________
CPU 7 Interrupt cycle time (s): 0,143959
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): 0,0
CPU 7 DPC total execution time (s): 0,0
CPU 7 DPC count: 0
_________________________________________________________________________________________________________

 

[rodak]

IRQs:


I've also tried using Microsoft Windows Performance Toolkit command:
xperf -on PROC_THREAD+LOADER+PROFILE+INTERRUPT+DPC+DRIVERS -stackwalk Profile -BufferSize 1024 -MinBuffers 256 -MaxBuffers 256 -MaxFile 256 -FileMode Circular
but I don't know exactly how to interpret these results: