Freeze lag and audio distortion (lag) in Windows 7


  1. nictjb
    Posts : 6
    Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
       New #1

    Freeze lag and audio distortion (lag) in Windows 7


    Hi Guys,

    I am having some freeze lag and audio distortion (lag), when playing games, listening to music.

    Things that I had done:

    1) Updated my windows
    2) Adjusted power options to high performance (Including minimum and maximum processor state for advance settings)
    3) Adjusted visual effects to best performance
    4) Disabled Windows defender
    4) Installed Smart Defrag 3
    5) Installed Ccleaner
    6) Installed Malwarebytes Anti-malware
    7) Installed LatencyMon

    Here is my LatencyMon results:

    ____________________________________________________________________________________________________ _____
    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. 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 0:37:28 (h:mm:ss) on all processors.


    ____________________________________________________________________________________________________ _____
    SYSTEM INFORMATION
    ____________________________________________________________________________________________________ _____
    Computer name: NICHOLAS-PC
    OS version: Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
    Hardware: LIFEBOOK SH771, FUJITSU, FJNB235
    CPU: GenuineIntel Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz
    Logical processors: 4
    Processor groups: 1
    RAM: 8103 MB total


    ____________________________________________________________________________________________________ _____
    CPU SPEED
    ____________________________________________________________________________________________________ _____
    Reported CPU speed: 2796.0 MHz
    Measured CPU speed: 2184.0 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.


    ____________________________________________________________________________________________________ _____
    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): 12222.764170
    Average measured interrupt to process latency (µs): 4.394330

    Highest measured interrupt to DPC latency (µs): 3897.267116
    Average measured interrupt to DPC latency (µs): 1.902596


    ____________________________________________________________________________________________________ _____
    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): 86.806152
    Driver with highest ISR routine execution time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation

    Highest reported total ISR routine time (%): 0.044753
    Driver with highest ISR total time: hal.dll - Hardware Abstraction Layer DLL, Microsoft Corporation

    Total time spent in ISRs (%) 0.074684

    ISR count (execution time <250 µs): 2308570
    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


    ____________________________________________________________________________________________________ _____
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  3. nictjb
    Posts : 6
    Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
    Thread Starter
       New #2

    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): 29303.251788
    Driver with highest DPC routine execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

    Highest reported total DPC routine time (%): 0.254209
    Driver with highest DPC total execution time: ndis.sys - NDIS 6.20 driver, Microsoft Corporation

    Total time spent in DPCs (%) 0.517229

    DPC count (execution time <250 µs): 4739619
    DPC count (execution time 250-500 µs): 0
    DPC count (execution time 500-999 µs): 12536
    DPC count (execution time 1000-1999 µs): 435
    DPC count (execution time 2000-3999 µs): 182
    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 169
    Hard pagefault count of hardest hit process: 129
    Highest hard pagefault resolution time (µs): 9598692.249642
    Total time spent in hard pagefaults (%): 0.941066
    Number of processes hit: 6
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  4. nictjb
    Posts : 6
    Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
    Thread Starter
       New #3

    PER CPU DATA
    ____________________________________________________________________________________________________ _____
    CPU 0 Interrupt cycle time (s): 78.740915
    CPU 0 ISR highest execution time (µs): 86.806152
    CPU 0 ISR total execution time (s): 6.718321
    CPU 0 ISR count: 2308570
    CPU 0 DPC highest execution time (µs): 29303.251788
    CPU 0 DPC total execution time (s): 44.247203
    CPU 0 DPC count: 4283365
    ____________________________________________________________________________________________________ _____
    CPU 1 Interrupt cycle time (s): 11.690590
    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): 331.278255
    CPU 1 DPC total execution time (s): 0.417984
    CPU 1 DPC count: 132565
    ____________________________________________________________________________________________________ _____
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  6. nictjb
    Posts : 6
    Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
    Thread Starter
       New #4

    CPU 2 Interrupt cycle time (s): 9.790550
    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): 420.300429
    CPU 2 DPC total execution time (s): 1.015294
    CPU 2 DPC count: 176911
    ____________________________________________________________________________________________________ _____
    CPU 3 Interrupt cycle time (s): 8.557883
    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): 274.171674
    CPU 3 DPC total execution time (s): 0.847625
    CPU 3 DPC count: 159939
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  7. nictjb
    Posts : 6
    Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
    Thread Starter
       New #5

    Here is my processes, arranged according to highest hard pagefaults.
    http://www.flickr.com/photos/1151261...n/photostream/

    Here is my Drivers, arranged according to highest ISR count.
    http://www.flickr.com/photos/1151261...n/photostream/

    Here is my Drivers, arranged according to highest DPC count.
    http://www.flickr.com/photos/1151261...n/photostream/

    Thanks for your time reading, hope you guys can help me find a solution.

    Cheers!
    Nic
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