I use a TASCAM US 2x2 audio interface as a simple audio out for my laptop. For various reasons, I had to reset my laptop with a clean copy of Windows 10. My interface worked perfectly until Tascam released an update to the driver for the interface, and the driver would freeze up if the computer slept, and even Task Manager or taskkill couldn't end the driver panel process. Before the update though, the interface worked perfectly.
MY PROBLEM:
Now after the reset, with no drivers for the interface installed, the interface will work for around 10 minutes, and then the sound will severely drop in quality, almost as if it were sent through a bitcrusher. Sometimes, the problem will fix itself, other times it will get worse and will speed up whatever is playing on the computer. By this, I mean if I'm watching a YouTube video, or listening to music on Spotify, it will play that video/song 8x speed.
Here's a video of I'm talking about
I ran latencymon to see where the problem lies.
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CONCLUSION
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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 0:01:00 (h:mm:ss) on all processors.
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SYSTEM INFORMATION
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Computer name: DESKTOP-CG7VVQ3
OS version: Windows 10 , 10.0, version 1903, build: 18362 (x64)
Hardware: G7 7590, Dell Inc., 0MXHK3
CPU: GenuineIntel Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
Logical processors: 12
Processor groups: 1
RAM: 16196 MB total
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CPU SPEED
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Reported CPU speed: 2592 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.
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): 25146.30
Average measured interrupt to process latency (µs): 8.656870
Highest measured interrupt to DPC latency (µs): 25139.20
Average measured interrupt to DPC latency (µs): 4.099976
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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): 23004.258488
Driver with highest ISR routine execution time: ACPI.sys - ACPI Driver for NT, Microsoft Corporation
Highest reported total ISR routine time (%): 0.017134
Driver with highest ISR total time: ACPI.sys - ACPI Driver for NT, Microsoft Corporation
Total time spent in ISRs (%) 0.017190
ISR count (execution time <250 µs): 1174
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 1
ISR count (execution time 1000-1999 µs): 0
ISR count (execution time 2000-3999 µs): 1
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): 79424.126543
Driver with highest DPC routine execution time: ACPI.sys - ACPI Driver for NT, Microsoft Corporation
Highest reported total DPC routine time (%): 0.043679
Driver with highest DPC total execution time: ACPI.sys - ACPI Driver for NT, Microsoft Corporation
Total time spent in DPCs (%) 0.102765
DPC count (execution time <250 µs): 97622
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 368
DPC count (execution time 1000-1999 µs): 12
DPC count (execution time 2000-3999 µs): 5
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.
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: dellsupportassistremedationservice.exe
Total number of hard pagefaults 169
Hard pagefault count of hardest hit process: 115
Number of processes hit: 11
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 2.220677
CPU 0 ISR highest execution time (µs): 23004.258488
CPU 0 ISR total execution time (s): 0.123771
CPU 0 ISR count: 1177
CPU 0 DPC highest execution time (µs): 79424.126543
CPU 0 DPC total execution time (s): 0.714408
CPU 0 DPC count: 95079
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CPU 1 Interrupt cycle time (s): 0.921173
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): 9.645062
CPU 1 DPC total execution time (s): 0.000043
CPU 1 DPC count: 6
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CPU 2 Interrupt cycle time (s): 0.765414
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): 100.450617
CPU 2 DPC total execution time (s): 0.002871
CPU 2 DPC count: 813
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CPU 3 Interrupt cycle time (s): 0.774697
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): 22.979938
CPU 3 DPC total execution time (s): 0.000210
CPU 3 DPC count: 37
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CPU 4 Interrupt cycle time (s): 0.877757
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): 58.179012
CPU 4 DPC total execution time (s): 0.000806
CPU 4 DPC count: 204
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CPU 5 Interrupt cycle time (s): 0.921825
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
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CPU 6 Interrupt cycle time (s): 0.759735
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): 41.898920
CPU 6 DPC total execution time (s): 0.000529
CPU 6 DPC count: 104
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CPU 7 Interrupt cycle time (s): 0.549606
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): 289.106481
CPU 7 DPC total execution time (s): 0.001896
CPU 7 DPC count: 194
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CPU 8 Interrupt cycle time (s): 1.516443
CPU 8 ISR highest execution time (µs): 0.0
CPU 8 ISR total execution time (s): 0.0
CPU 8 ISR count: 0
CPU 8 DPC highest execution time (µs): 120.221451
CPU 8 DPC total execution time (s): 0.011636
CPU 8 DPC count: 1097
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CPU 9 Interrupt cycle time (s): 0.747489
CPU 9 ISR highest execution time (µs): 0.0
CPU 9 ISR total execution time (s): 0.0
CPU 9 ISR count: 0
CPU 9 DPC highest execution time (µs): 4.108796
CPU 9 DPC total execution time (s): 0.000007
CPU 9 DPC count: 2
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CPU 10 Interrupt cycle time (s): 0.812966
CPU 10 ISR highest execution time (µs): 0.0
CPU 10 ISR total execution time (s): 0.0
CPU 10 ISR count: 0
CPU 10 DPC highest execution time (µs): 56.180556
CPU 10 DPC total execution time (s): 0.001309
CPU 10 DPC count: 220
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CPU 11 Interrupt cycle time (s): 0.800198
CPU 11 ISR highest execution time (µs): 0.0
CPU 11 ISR total execution time (s): 0.0
CPU 11 ISR count: 0
CPU 11 DPC highest execution time (µs): 277.860340
CPU 11 DPC total execution time (s): 0.006196
CPU 11 DPC count: 257
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I see that many people on here post about DPC latency issues. And I also see most of the replies are to update to the latest version of Windows or get it inspected by someone else.
I'd like to know the MOST I can do at home by myself without having to take it to someone else.
Here's some potentially useful information:
I am on the latest version of Windows 10. I use this computer to play YouTube, Spotify, games on Steam, Video Editing and Music Composition.
I have MacAfee LiveSafe installed
I've done some searching around and people say to put your power settings to high performance. I've done this and it still doesn't fix the issue.
I'd like to do away with this issue completely, any and all help is very much appreciated.
