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Jittery audio

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Hello. I am unsure if I need to post here or open a Helpdesk ticket but I am experiencing the same type of problem with my system. I recently purchased Malwarebytes Pro and upgraded from Windows XP-SP3 to Window 7-SP1 Home Premium. Everything went fine at first except I noticed my audio had a latency to it. I updated drivers, tried various media players (Windows Media Player, WinAmp, JetAudio), ripped some new MP3s just to make sure nothing was corrupt and nothing seemed to help. Anyway, several days ago, my system because corrupt and I had to reinstall Windows 7 which retained all my data but removed all my programs. After setting everything up again, I decided to play a few songs and noticed there was NO latency at ALL! The only program that I had not yet reinstalled was Malwarebytes Pro. After I reinstalled the program and turned everything back on, the problem began reoccurring. This latency happens in my MP3s, Video Playback as well as streaming media such as You Tube as well. I searched the forums and found this post and decided to start here with the problem. Any further insight on this problem would be greatly appreciated. Thanks!

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  • Root Admin

Hello and Welcome to Malwarebytes

Please create an mbam-check log:

  • Download mbam-check.exe from here and save it to your desktop
  • Double-click on mbam-check.exe to run it, it should then open a log file
  • Please do not copy and paste the entire contents of the log into your next post, instead please attach the log CheckResults.txt file which should now be located on your desktop to your next post

Next, Please run the following scanner and send back the logs.

Download DDS from one of the locations below and save to your Desktop



Temporarily disable any script blocker if your Anti-Virus/Anti-Malware has it.

How To Temporarily Disable Your Anti-virus, Firewall And Anti-malware Programs

Once downloaded you can disconnect from the Internet and disable your Ant-Virus temporarily if needed.

Then double click dds.scr or dds.com to run the tool, on Vista or Win 7 right click and select Run as administrator

Click the Run button if prompted with an Open File - Security Warning dialog box.

A black DOS console should open and run for a moment.

    When done, DDS will open two (2) logs:
  1. DDS.txt
  2. Attach.txt

  • Save both reports to your desktop
  • Please include the following logs in your next reply: DDS.txt and Attach.txt
    You can ignore the note about zipping the Attach.txt file in most cases.


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Hi, it would interesting to know the outcome of this as I too am having the same issue running MWB Pro on WIN7. The problem occurs ONLY with 'website blocking' enabled. DPC latency checker confirms the massive latency spikes with website blocking on and the lack of spikes when it's off.

Thanks :)

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Hi, Admin.

I have crackly audio, I assume like the OP. The DPC checker was used to narrow down the problem, and sadly the usage of 'website blocking' points towards MWB Pro being the cause of the audio crackling (it doesn't occur when it's disabled). I'll do what I can to upload the logs in the next 24 hours.

Thanks. :)

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  • 3 weeks later...

I, too, can confirm the DPC latency spikes in the DPC latency checker program. I'm not sure if it's causing problems or not. Turning off website checking stops the spikes. When it's on, I get spikes usually in the area of 1500 or so, but sometimes as high as upwards of 20,000.

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Highest DPC routine execution time (µs): 14834.985704

Driver with highest DPC routine execution time: ndis.sys - NDIS 6.20 driver, Microsoft Corporation

(tcpip.sys was next, with 2128 µs)

Highest measured interrupt to process latency (µs): 13815.288675

Average measured interrupt to process latency (µs): 3.215732

Highest measured interrupt to DPC latency (µs): 13811.994964

Average measured interrupt to DPC latency (µs): 1.365148

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  • 2 weeks later...

Hi all,

I just had to sign up just to send my $.02. MWB is an awesome program, however, the fact that a check mark in "Website Blocking" will disturb any streaming media with latency spikes (an therefore causing hick-ups in music, video, etc.) is well known and documented by countless users. This is not an individual PC problem. As a paying customer, I would truly like to see an administrator just finally admit to a program fault and let us know that the issue is being worked on.


Carsten M.

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  • Root Admin

Please read the forums as we've admitted more than once and have given our response. In fact you'll find a reply in the General forum just today about it.

But yes it is an individual PC issue in that a very small segment of users have this issue. We have millions of customers and I would be hard pressed to find a few dozen separate posts about this issue. We have said over and over now that yes we do hope to update the driver so that it works well for everyone but we simply do not have an answer as to when that will be is all.

We want all our customers to be happy but If you have purchased the software within the last 30 days or so and are having this issue and not happy you can submit for a refund and we'll be happy to assist you.

Thank you

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  • 2 weeks later...

Hi guys, I'm new to this forum and I have searched high and low for a solution to this problem, jittery audio with the website blocker on and it took me months to get here and discover this is the cause! I hope there is an update and fix available soon as I don't want to stop using this great software but I can't bear what it's doing to all of my playback on my PC. Please fix it as soon as you can as I bet it's a bigger issue than you think with users, they just, like me are still unaware and aren't tracing it to this software as yet, but unfortunately this is where the problem lies for sure. :( Thanks!

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