DPC latency caused by NIC

[Louis54000]

Hi,

I have audio crackling for a few days now. I don't know why it started doing that. It's really annoying because even dragging a window around makes the sound stutter and watching a 4K video is almost impossible. 

I believe the problem comes from my NIC, Intel 82579V. I downloaded DPC Latendy Checker and when I start downloading at a few mbps (torrent) I have a DPC latency of around 8000 to 16000µs. Doesn't matter if it's 3mbps or 600mbps. When I disable the NIC or stop all network traffic I'm back to 1000µs.

I tried reinstalling the drivers by uninstalling and letting Windows reinstall. 

Any idea how to fix this ?

Thank you !

[sof006]

Take out your motherboard from your PC case and try it again. It sounds like a grounding issue, could be the port is being shorted out and is causing system interrupts.