Japanimation
Member
- Dec 9, 2013
- 17
Lately I've been having a ton of issues involving DPC Latency. First, I will explain how I noticed this, and when it occurs.
The other day while running Media Player Classic x64, I noticed that whenever subtitles would display, my machine would act sluggish and the audio would be distorted. The video playback would also slow down and skip, too.
I was doing some research on the audio popping and distortion and that's how I learned about DPC Latency. I downloaded and installed LatencyMon and DPCLAT, and ran a few tests. In [this](http://i.imgur.com/QbHpuEp.jpg) screenshot you can see the latency spikes when a subtitle occurs. I also noticed that when Steam (a game distribution and management program) is resized to a decent sized window, say 1600x900, or lower even that the latency also occurs. [This](http://i.imgur.com/ruHK1r7.jpg) screenshot shows a continuation of the last without the subtitles and the latency while using Steam. Both of these tests are done with DPCLAT.
[Here](http://i.imgur.com/PCd4cgR.jpg) you can see what LatencyMon shows, and if you scroll down you can see a text log of this test. My knowledge with computers is limited and I only know the basics, so I'm not entirely sure what to make of either of these. So some professional or experienced input would be greatly appreciated. This test was done while moving around the enlarged Steam window.
I have tried disabling devices to find the cause of this issue, but so far I've come up empty. Please not, that the yellow amount of latency has always existed on my system and I have never had an issue with it. It is caused by my Network Adapter, it is not directly supported under Windows 7 and the only driver that works with it creates quite a bit of latency. The adapter is a Linkysys WMP300Nv1.
You can see my other system specs [here](http://i.imgur.com/xiE13hm.jpg) and [here](http://i.imgur.com/1SXx3w1.jpg). If you need additional information, or want me to run additional tests, just ask. I would really like to solve this problem, as it has become incredibly inconvenient.
Another thing to note is that while playing games, everything is fine. I don't get any stutters or hindered gameplay.
I have also gone through almost every device on my system (that I can think of) through Device Manager and disabled them one by one while monitoring DPCLAT. I've disabled my Network Adapater (which solves the yellow amount of latency, but that's not the issue, I'm looking to solve the red spikes that are hindering my proformance,) my GPU, USBs, Keyboard, Mouse, etc. I have even tried a clean install on a spare drive and booted from that, but the issue persisted.
I also followed a tutorial on this website and according to that, USBPORT.sys, hal.dll, and dxgkernal are my top contenders for this issue. I don't know where to go from there, though. The tutorial I followed is here: https://www.sysnative.com/forums/wi...ues-with-wpa-windows-windows-vista-7-8-a.html. So, thank you Niemiro for the tutorial, it at least helped me make progress.
The other day while running Media Player Classic x64, I noticed that whenever subtitles would display, my machine would act sluggish and the audio would be distorted. The video playback would also slow down and skip, too.
I was doing some research on the audio popping and distortion and that's how I learned about DPC Latency. I downloaded and installed LatencyMon and DPCLAT, and ran a few tests. In [this](http://i.imgur.com/QbHpuEp.jpg) screenshot you can see the latency spikes when a subtitle occurs. I also noticed that when Steam (a game distribution and management program) is resized to a decent sized window, say 1600x900, or lower even that the latency also occurs. [This](http://i.imgur.com/ruHK1r7.jpg) screenshot shows a continuation of the last without the subtitles and the latency while using Steam. Both of these tests are done with DPCLAT.
[Here](http://i.imgur.com/PCd4cgR.jpg) you can see what LatencyMon shows, and if you scroll down you can see a text log of this test. My knowledge with computers is limited and I only know the basics, so I'm not entirely sure what to make of either of these. So some professional or experienced input would be greatly appreciated. This test was done while moving around the enlarged Steam window.
I have tried disabling devices to find the cause of this issue, but so far I've come up empty. Please not, that the yellow amount of latency has always existed on my system and I have never had an issue with it. It is caused by my Network Adapter, it is not directly supported under Windows 7 and the only driver that works with it creates quite a bit of latency. The adapter is a Linkysys WMP300Nv1.
You can see my other system specs [here](http://i.imgur.com/xiE13hm.jpg) and [here](http://i.imgur.com/1SXx3w1.jpg). If you need additional information, or want me to run additional tests, just ask. I would really like to solve this problem, as it has become incredibly inconvenient.
Another thing to note is that while playing games, everything is fine. I don't get any stutters or hindered gameplay.
I have also gone through almost every device on my system (that I can think of) through Device Manager and disabled them one by one while monitoring DPCLAT. I've disabled my Network Adapater (which solves the yellow amount of latency, but that's not the issue, I'm looking to solve the red spikes that are hindering my proformance,) my GPU, USBs, Keyboard, Mouse, etc. I have even tried a clean install on a spare drive and booted from that, but the issue persisted.
I also followed a tutorial on this website and according to that, USBPORT.sys, hal.dll, and dxgkernal are my top contenders for this issue. I don't know where to go from there, though. The tutorial I followed is here: https://www.sysnative.com/forums/wi...ues-with-wpa-windows-windows-vista-7-8-a.html. So, thank you Niemiro for the tutorial, it at least helped me make progress.
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