Windows 10: Huge latency spikes (freezes, hiccups) while downloading and streaming

  1.    14 Dec 2016 #1

    Huge latency spikes (freezes, hiccups) while downloading and streaming

    Hi guys!

    I really need your help on this one. Usually Iím good at troubleshooting and finding solutions without having to start my own threads. This time however, it seems impossible to find a solution. Anyway, hereís the thing:
    When downloading through utorrent, steam etc and listening to music/watching videos I get huge DPC latency spikes when touching the trackpad. The spikes result in robotic sound, computer hiccups and freezes (minor 1 sec freezes, every 3-5 seconds) But hereís the weird thing. I donít get the spikes if Iím not touching the trackpad or IF I have a usb mouse connected to my laptop. For some reason, having a usb mouse connected solves the latency problem instantly. Then I can download, listen to audio and watch videos without any problems even though moving the mouse like crazy. So strange.

    I have a Lenovo 710 14í laptop with windows 10. Bought it a week ago. Kaby lake.

    Nvidia 940mx
    8 gb ram
    256 gb ssd

    I have tried a bunch of potential solutions. Creating a bigger pagefile, updating all drivers to newest and also degrading to Lenovoís website drivers (older). Iíve disabled bits and windows update. Iíve change the power scheme, so that the processor minimum is 100%. And a lot of other things. I canít even think about everything Iíve tried.

    Iíve used latency mon to investigate the latency spikes. Latency mon says that the culprit is WDF01000.sys. Iíve read that itís difficult to say which driver uses that file etc. While using latency checker I tried disabling the realtek audio adapter. That made the spikes go away. Iím playing music through spotify, which can be quite bandwidth heavy.
    Itís like my computer is really sensitive to heavy internet activity, combined with audio/video streaming.

    The task manager doesnít show anything special when the spikes occur. The system interrupt process take up a bit more cpu and memory, but thatís basically it. Otherwise, the computer works fine. Itís just in the specific situation where I download, stream something and donít have a mouse connected that this happens.

    Any ideas would me MUCH appreciated!
      My ComputerSystem Spec

  2. Posts : 8,187
    Windows 10 Pro x64 Build 1803
       14 Dec 2016 #2

    Welcome to the Ten Forums

    While I don't have an answer have you tried Nirsoft Driver View available here

    Its description column may give you that added piece of info to track origination.
      My ComputerSystem Spec


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