In the past few days I've been hearing some occasional crackling or popping noises whenever I'm using my Bluetooth headphones or wired earbuds, even when there's no audio playing at the moment. I'm still currently not sure of the cause, whether it's due to interference, something wrong with my computer, or if it's just me.
I've tried running LatencyMon on my computer but I can't make heads or tails of the diagnosis, so I'm hoping someone here could help me with it.
I have already attempted to fix the issue by updating my BIOS, disabling audio enhancements, and setting the audio quality to the lowest CD quality.
My computer specs:
CPU: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz 2.00 GHz
RAM: SK Hynix 16GB 2400 MHz
Motherboard: LENOVO 81CA
GPU: Intel(R) UHD Graphics 620, NVIDIA GeForce MX130
SSD: NVMe SAMSUNG MZVLB512
Here's the LatencyMon report:
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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. At least one detected problem appears to be network related. In case you are using a WLAN adapter, try disabling it to get better results. 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 0:22:39 (h:mm:ss) on all processors.
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SYSTEM INFORMATION
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Computer name: DESKTOP-GS27JHL
OS version: Windows 10 , 10.0, version 1903, build: 18362 (x64)
Hardware: 81CA, LENOVO, LNVNB161216
CPU: GenuineIntel Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
Logical processors: 8
Processor groups: 1
RAM: 16250 MB total
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CPU SPEED
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Reported CPU speed: 1992 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): 1453.70
Average measured interrupt to process latency (µs): 5.110116
Highest measured interrupt to DPC latency (µs): 1421.20
Average measured interrupt to DPC latency (µs): 1.396188
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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): 263.758032
Driver with highest ISR routine execution time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation
Highest reported total ISR routine time (%): 0.002644
Driver with highest ISR total time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation
Total time spent in ISRs (%) 0.005018
ISR count (execution time <250 µs): 77913
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): 0
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): 2202.021586
Driver with highest DPC routine execution time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation
Highest reported total DPC routine time (%): 0.020822
Driver with highest DPC total execution time: rspLLL64.sys - Resplendence Latency Monitoring and Auxiliary Kernel Library, Resplendence Software Projects Sp.
Total time spent in DPCs (%) 0.081615
DPC count (execution time <250 µs): 2123104
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 2181
DPC count (execution time 1000-1999 µs): 23
DPC count (execution time 2000-3999 µs): 2
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: msmpeng.exe
Total number of hard pagefaults 5883
Hard pagefault count of hardest hit process: 1749
Number of processes hit: 68
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 44.571359
CPU 0 ISR highest execution time (µs): 263.758032
CPU 0 ISR total execution time (s): 0.544871
CPU 0 ISR count: 77839
CPU 0 DPC highest execution time (µs): 960.925703
CPU 0 DPC total execution time (s): 6.282278
CPU 0 DPC count: 2012471
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CPU 1 Interrupt cycle time (s): 30.751413
CPU 1 ISR highest execution time (µs): 64.362952
CPU 1 ISR total execution time (s): 0.000734
CPU 1 ISR count: 75
CPU 1 DPC highest execution time (µs): 585.674699
CPU 1 DPC total execution time (s): 0.108614
CPU 1 DPC count: 14264
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CPU 2 Interrupt cycle time (s): 34.304461
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): 2202.021586
CPU 2 DPC total execution time (s): 1.892327
CPU 2 DPC count: 48775
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CPU 3 Interrupt cycle time (s): 43.858704
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): 776.770080
CPU 3 DPC total execution time (s): 0.065347
CPU 3 DPC count: 6260
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CPU 4 Interrupt cycle time (s): 28.643448
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): 719.409639
CPU 4 DPC total execution time (s): 0.201679
CPU 4 DPC count: 19053
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CPU 5 Interrupt cycle time (s): 44.310420
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): 792.337349
CPU 5 DPC total execution time (s): 0.136575
CPU 5 DPC count: 5943
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CPU 6 Interrupt cycle time (s): 28.086523
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): 609.465361
CPU 6 DPC total execution time (s): 0.134650
CPU 6 DPC count: 13961
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CPU 7 Interrupt cycle time (s): 43.889504
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): 384.235944
CPU 7 DPC total execution time (s): 0.052646
CPU 7 DPC count: 4583
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