Hi, guys. I need some help.
This is my lapnbsp;Samsung ATIV Book 4 - 450R5E CPU: Intel Core i5-3230M, 2x 2.60GHz  RAM: 4GB (1x 4GB) 500GB HDD NVIDIA GeForce 710M, 2GB

OS Windows 8

So, i bought an usb audio interface recently. Now i have some troubles with my DPC latency. I've made some analyzes with xperf and now i see what causing the problem. USBPORT.sys making huge spikes. I have a link to my .etl file, but i cannot post links and images on this forum because

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I found a usb bugfix file for Windows 7, but i don't know what to do with my Windows 8.
Help me, please! Thank you!

• Edited by ArturKiros Friday, January 24, 2014 8:47 AM

Looks like no one can help me. Sad.

Hi,

You can use event trace for windows  in your situation, and upload the etl file in forum by SkyDrive, I will look into it:

How to Capture and Read USB ETW Traces in Windows 8

http://blogs.msdn.com/b/usbcoreblog/archive/2012/08/07/how-to-trace-usb-3-activity.aspx

for a general solution about this kind of issue, update the driver should be a good approach to fix it.