V1903 Causing DPC Latency Hits

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  1. Posts : 4
    Windows 10 EDU
       #11

    Here's mine after 23mins or so, just random web browsing. If i were to watch a 4k video or something, it would spike it bit higher but nothing too far out of range.
    Attached Thumbnails Attached Thumbnails V1903 Causing DPC Latency Hits-23mins.png  
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  2. fireberd's Avatar
    Posts : 2,046
    Win 10
    Thread Starter
       #12

    I use mine for my recording studio. Different application than yours.
    When I record, I disable the NIC so I'm off line. I was on-line when I did the Latency Mon test, but I've had dropout problems in the past being on-line so I always disable it when doing anything with a recording program. May not be an issue, anymore, but I still do it.
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  3. Posts : 58
    Mixed
       #13

    this is affecting intel and amd cpu's with default throttling settings configured.
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  4. Posts : 9
    Windows 10
       #14

    Diceman2037 said:
    this is affecting intel and amd cpu's with default throttling settings configured.
    Default throttling settings config'd? What are these settings and where do you change them
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  5. Posts : 136
    Win 10
       #15

    How To Disable Power Throttling in Windows 10 [Recent Versions]
    Note if you do use GPE to enable turn off power throttling and you want to put it back to not configured/disabled, you will need to edit registry as GPE doesn't reverse where it added/changed regkey.
    here
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerThrottling

    If you do not have such a key, then just create it.

    Here, create a new 32-bit DWORD value PowerThrottlingOff.
    Set it to 1 to disable Power Throttling, set to 0 to disable.
    Last edited by EdKiefer; 13 Jun 2019 at 10:10.
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  6. EdTittel's Avatar
    Posts : 3,750
    Windows 10
       #16

    Here's an interesting tweet from MS Engineer Pete Brown:
    V1903 Causing DPC Latency Hits-image.png
    Here's a link to that item on Twitter: Twitter Publish
    Seems that KB 4505903 includes one or more fixes to help address DPC latency issues, even though that information is NOT included in the What's Fixed list for that CU.
    FYI!
    --Ed--
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  7. fireberd's Avatar
    Posts : 2,046
    Win 10
    Thread Starter
       #17

    I saw that on the Gearslutz forum this morning. Pete Brown has been active in the gearslutz thread.

    I installed it this morning, although I wasn't having any more problems.

    I did a 3 hour recording session for a client, Saturday, and no audio problems.

    One of the users that reported this KB fixed their problems is using an ASUS ROG Z170 motherboard with the added Thunderbolt adapter. Until he installed this KB he was still having problems. I have an ASUS ROG Z170 motherboard but no added Thunderbolt port adapter. Apparently something in this KB addressed Thunderbolt???
      My Computers


  8. Posts : 4
    Windows 10 EDU
       #18

    EdTittel said:
    Here's an interesting tweet from MS Engineer Pete Brown:
    V1903 Causing DPC Latency Hits-image.png
    Here's a link to that item on Twitter: Twitter Publish
    Seems that KB 4505903 includes one or more fixes to help address DPC latency issues, even though that information is NOT included in the What's Fixed list for that CU.
    FYI!
    --Ed--
    Really appreciate the update
      My Computer


  9. Posts : 58
    Mixed
       #19

    tis amusing they didn't report it also caused significant framerate drops in some games.

    ie... bf3 went from 50fps to 190+ with the fix.
      My Computer


  10. Posts : 4
    Windows 10 Pro 1903 (64 Bit)
       #20

    Sorry to bump, but I just got the KB4505903 update (Not an insider, but I installed the package from here Cumulative Update KB4505903 Windows 10 v1903 build 18362.264 - July 19 and my DPC latency hasn't changed... ?

    I checked in winver, and it definitely says Build 18362.264, so the update is clearly applied. The only way I can get my DPC latency back to what it used to be is with the Timer Tool TairikuOkami posted.
      My Computer


 
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