Windows 8 and 8.1 Forums

Audio Clipping/Laggy PC performance [high DPC]

  1. #1

    Posts : 18
    Windows 8.1

    Audio Clipping/Laggy PC performance [high DPC]

    To whoever can help me,
    This issue has started about 2 weeks ago, after I installed new drivers (don't remember which specific one)
    I started to notice very minor things, like slight overheating on very basic tasks, clipping sounds on simple events like changing rooms in team speak.
    The issue however became very apparent once I launched Counter Strike : GO, last night, It seemed that not only was the game slow and laggy, but the sounds seemed to all mesh up together creating a very distorted audio sound.
    I ran DPC latency Checker and got an average of 1014, with the message that some device drivers on this machine behave badly, a similar program gave me the same details, LatencyMon.
    My BIOS was recently updated (about 3 months ago) with the latest version, and everything was running just fine.
    Any source of help will be very appreciated.

    Some PC specs:
    Windows 8.1
    Intel i7-3630QM
    32gb RAM
    64 bit
    nvidea gforce 680m

      My System SpecsSystem Spec

  2. #2

    Posts : 18
    Windows 8.1

    The following is a report error using LatencyMon, if it helps.
    Your  system seems to have difficulty handling real-time audio and other  tasks. You may experience drop outs, clicks or pops due to buffer  underruns. 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  0:01:37  (h:mm:ss) on all processors.
    Computer name:                                        MSI
    OS version:                                           Windows 8 , 6.2, build: 9200 (x64)
    Hardware:                                             GT70, Micro-Star International Co., Ltd., MS-1762
    CPU:                                                  GenuineIntel Intel(R) Core(TM) i7-3630QM CPU @ 2.40GHz
    Logical processors:                                   8
    Processor groups:                                     1
    RAM:                                                  32659 MB total
    Reported CPU speed:                                   2395.0 MHz
    Measured CPU speed:                                   1482.0 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.
    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 (s):   1000.236482
    Average measured interrupt to process latency (s):   5.998279
    Highest measured interrupt to DPC latency (s):       997.243042
    Average measured interrupt to DPC latency (s):       1.780981
    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 (s):              97.850522
    Driver  with highest ISR routine execution time:       ndis.sys - Network  Driver Interface Specification (NDIS), Microsoft Corporation
    Highest reported total ISR routine time (%):          0.030023
    Driver  with highest ISR total time:                   ndis.sys - Network  Driver Interface Specification (NDIS), Microsoft Corporation
    Total time spent in ISRs (%)                          0.059291
    ISR count (execution time <250 s):                   112868
    ISR count (execution time 250-500 s):                0
    ISR count (execution time 500-999 s):                0
    ISR count (execution time 1000-1999 s):              0
    ISR count (execution time 2000-3999 s):              0
    ISR count (execution time >=4000 s):                 0
    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 (s):              437.700209
    Driver  with highest DPC routine execution time:       ndis.sys - Network  Driver Interface Specification (NDIS), Microsoft Corporation
    Highest reported total DPC routine time (%):          0.073230
    Driver with highest DPC total execution time:         dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
    Total time spent in DPCs (%)                          0.200287
    DPC count (execution time <250 s):                   406380
    DPC count (execution time 250-500 s):                0
    DPC count (execution time 500-999 s):                22
    DPC count (execution time 1000-1999 s):              0
    DPC count (execution time 2000-3999 s):              0
    DPC count (execution time >=4000 s):                 0
    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:                 vsserv.exe
    Total number of hard pagefaults                       143
    Hard pagefault count of hardest hit process:          106
    Highest hard pagefault resolution time (s):          49144.791232
    Total time spent in hard pagefaults (%):              0.015325
    Number of processes hit:                              5
    CPU 0 Interrupt cycle time (s):                       4.872116
    CPU 0 ISR highest execution time (s):                97.850522
    CPU 0 ISR total execution time (s):                   0.460169
    CPU 0 ISR count:                                      112868
    CPU 0 DPC highest execution time (s):                437.700209
    CPU 0 DPC total execution time (s):                   1.435590
    CPU 0 DPC count:                                      382235
    CPU 1 Interrupt cycle time (s):                       2.212857
    CPU 1 ISR highest execution time (s):                0.0
    CPU 1 ISR total execution time (s):                   0.0
    CPU 1 ISR count:                                      0
    CPU 1 DPC highest execution time (s):                106.194572
    CPU 1 DPC total execution time (s):                   0.007544
    CPU 1 DPC count:                                      1703
    CPU 2 Interrupt cycle time (s):                       1.568945
    CPU 2 ISR highest execution time (s):                0.0
    CPU 2 ISR total execution time (s):                   0.0
    CPU 2 ISR count:                                      0
    CPU 2 DPC highest execution time (s):                136.721503
    CPU 2 DPC total execution time (s):                   0.020264
    CPU 2 DPC count:                                      5428
    CPU 3 Interrupt cycle time (s):                       2.128981
    CPU 3 ISR highest execution time (s):                0.0
    CPU 3 ISR total execution time (s):                   0.0
    CPU 3 ISR count:                                      0
    CPU 3 DPC highest execution time (s):                45.663466
    CPU 3 DPC total execution time (s):                   0.015147
    CPU 3 DPC count:                                      2568
    CPU 4 Interrupt cycle time (s):                       1.432508
    CPU 4 ISR highest execution time (s):                0.0
    CPU 4 ISR total execution time (s):                   0.0
    CPU 4 ISR count:                                      0
    CPU 4 DPC highest execution time (s):                115.911482
    CPU 4 DPC total execution time (s):                   0.024670
    CPU 4 DPC count:                                      6433
    CPU 5 Interrupt cycle time (s):                       2.011591
    CPU 5 ISR highest execution time (s):                0.0
    CPU 5 ISR total execution time (s):                   0.0
    CPU 5 ISR count:                                      0
    CPU 5 DPC highest execution time (s):                234.892693
    CPU 5 DPC total execution time (s):                   0.017457
    CPU 5 DPC count:                                      1709
    CPU 6 Interrupt cycle time (s):                       1.248709
    CPU 6 ISR highest execution time (s):                0.0
    CPU 6 ISR total execution time (s):                   0.0
    CPU 6 ISR count:                                      0
    CPU 6 DPC highest execution time (s):                210.466806
    CPU 6 DPC total execution time (s):                   0.020493
    CPU 6 DPC count:                                      4783
    CPU 7 Interrupt cycle time (s):                       1.809457
    CPU 7 ISR highest execution time (s):                0.0
    CPU 7 ISR total execution time (s):                   0.0
    CPU 7 ISR count:                                      0
    CPU 7 DPC highest execution time (s):                206.027557
    CPU 7 DPC total execution time (s):                   0.013303
    CPU 7 DPC count:                                      1543
    Last edited by Brink; 08 Feb 2015 at 10:19. Reason: code box
      My System SpecsSystem Spec

  3. #3

    The Latency Checker is invalid for Win 8 (says so on their web site). But the Latency Mon is valid.

    You didn't fill in the "My System Specs" but from the limited information you did give, I assume you are on a laptop, That and the reference to the communications in Latency Mon, are you using Wi-Fi? Wi-Fi is a known cause of some of these problems.
      My System SpecsSystem Spec

  4. #4

    Posts : 18
    Windows 8.1

    Thanks for the reply,
    No I'm not using WiFi, I'm using an Ethernet cable, connected directly to the router.
    And yes I am on a laptop.
    I'm willing to answer any further questions.
    There was one claim that stated I should consider uninstalling BitDefender?
      My System SpecsSystem Spec

  5. #5

    I don't know if BitDefender is a problem. I just use the default Windows Defender built into Win 8.1 (called Microsoft Security Essentials in Windows 7) and Malwarebytes.

    As this recently happened, after installing drivers, you can do a "rollback" of the drivers to previous versions. Do it one at a time to see which one, if any, caused the problem. Go to the Device Manager, Display one of the devices and then click the driver tab and Rollback will be one option. See my screen shot below:

    Click image for larger version
      My System SpecsSystem Spec

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