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Windows 7: Pops and cracks playing music (huge latency caused by network traffic)

30 Jun 2017   #1

Windows 7 Professional 64bit
Pops and cracks playing music (huge latency caused by network traffic)


OK, this is an OLD issue that just vanishes by itself from times to times without any noticeable reason, leaving me alone for some time and then out of the blue it returns. After several months of peace it came back a couple weeks ago.

The issue: when playing tunes (I use Foobar 2000) the music start popping and crackling and lagging. The problem will happen using ANY player.

What I figured out: using "DPC Latency Checker" I noticed that I have a huge lag (only high red bars) and noticed also that it i's caused by my network traffic. It's just to disconnect from the Internet or plug off the wi-fi adapter to make the problem disappear and the big red latency bars become small green chunks. SO I am not sure if the problem is being caused by network traffic or wi-fi traffic.

What I tried: the only things I did was to disable the sound card driver effects and also tried to install ASIO4ALL. Nothing of this made any difference.

Although I know where is the problem I don't see what is causing it and therefore cannot solve this. My computer is a desktop so I cannot move around and also cannot plug it directly to the router using a LAN cable (if wi-fi is the problem). It is not too far from the router, less than 10 meters and there is not a wall between them (I can even see the router from my work desk).

Any idea on how to solve this? I never had such problem when I used XP and it just started after I move to W7. I googled after some similar issue, found something but didn't find any solution.

PS: My sound decoder hardware is a Behringer UCA 222 (external USB) but I used to experience the very same issue when I used the mo-bo on board adapter, so I know that the culprit is not the sound card.

Any input appreciated!


EDIT: I may have started a similar thread in the past, I really don't remember. If so, I am sorry, it is just that it is an issue that every now and then comes and goes and that I never managed to find a definitive solution for.

My System SpecsSystem Spec
04 Jul 2017   #2

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10

I am assuming you have updated the sound card driver and tried reseating it because it smacks of something loose. I would also check any cables to the sound system and maybe even try another sound system if you can it could be that.

If you do get the sound card out just check it over for any caps that look like they are on the way out (bulging for example) and any scorch marks on the PCB. Also have a look at the sockets themselves for dry joints where they are soldered to the PCB and while I am thinking of it if you can check the joins in the jack plugs themselves.

Have you done any system scans on the machine yet?? if not then do these at least< if necessary include the /f switch and if this does not makeany improvement then just run this switch instead /r in the commandline as per Option2

Runthese in safe mode and the sfc often best run for two to three runs –you can leave out the /r switch in ckdsk if you feel it not necessary
My System SpecsSystem Spec
18 Oct 2019   #3

Windows 7 Professional 64bit

I know that it is a very old thread but since I know that there is still a LOT of people out there suffering with this plague here we go.

There is some time since I posted here for the last time. The problem still haunted me for a long time and I was convinced that the only solution for me would be to set up a dedicated system for play music (based on a thin PC running Linux or XP) but then today I bumped with this article pointing a few "methods" that supposedly could solve the DPC latency issue...

Fix: High DPC Latency on Windows 10 -

I confess that I am completely skeptical about any of those online solutions since I have tried a LOT of them and nothing seemed to cause any positive effect. However, what wrong could happened? So I decided to give it a shot.

The two suggested methods I tried on my computer (and that I didn't find so far in any of the other articles) were the mentioned in the topics number 3 (disable the Energy Efficient Ethernet on my network adapter) and number 7 (Disable the TCP/IPv6).

OK, after to apply both onto my system, I am still not 100% sure that it will solve my issue for good, but so far it seemed to have made a HUGE difference. Oddly the Resplendence Latency Monitor still says that my system may suffer with somewhat high execution time of a couple DPC routines (in my case the culprits are USBPORT.SYS and TCPIP.SYS) regardless the graphic red bars looks too much smaller than before.

What really matters is that in this right moment I am typing in this post I am performing a download using the totality of my bandwidth through WiFi while I am listening to a mp3 album and guess what: NO ONE dropout, click or pop.

I will keep monitoring the computer behavior and will report if I consider that it solved (or not) my problem definitively. I hope that it helps someone else.

PS: It's funny that I managed to figure it out just when MS announced that W7 is officially abandoned. I don't intend to move to a newest version though while everything I run still works fine on Seven.
My System SpecsSystem Spec


 Pops and cracks playing music (huge latency caused by network traffic)

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