DPC Latency issues; audio distortions and full PC slowdown w/system interrupts.

volkerball3011

Honorable
Jun 13, 2013
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10,540
Hello all, apologies if this has been asked a thousand times, but I've searched the forums here as well as on other sites, and I can't seem to find a definite solution.

A few days ago, I began experiencing issues that began as audio distortions(clicks, pops, etc.), but which eventually progressed to lag and slowdown that would lock up my entire system, even my mouse's movement. Running both DPC Latency Checker and LatencyMon helped me to pinpoint my network adapter as the source of the issue. Specifically, "NDIS.SYS" is at the top of the list on LatencyMon.

My Specs:
OS: Windows 10 Home
CPU: AMD Athlon II X4 640
GPU: Sapphire AMD Radeon R9 380 ITX Compact Edition
Motherboard: Dell 04GJJT
PSU: Corsair CX750m
New Ethernet Adapter: TP-LINK TG-3468
Integrated Ethernet Adapter: Broadcom Netlink (TM) Gigabit Ethernet(no new drivers for this adapter since 2013)

I've been using a new ethernet card I purchased from Newegg recently, after experiencing spontaneous internet connectivity losses with my PC's built-in ethernet hardware. I assumed the new component was faulty(it was rather cheap) and tried switching back to my integrated ports.

This worked... for a short time. Within a day, the issues had returned, worse than before, still centering on my network adapter. I tried rolling back my drivers to their earliest version(advice I read on another site), and this worked... again, only for a little while. The issues promptly returned after almost a day.

I went into Power Options and disabled CPU throttling, as yet another poster on another page recommended. This, too, worked temporarily.

The issue right now isn't as severe as it was even just yesterday, but I'm still getting pops/crackles during video and audio playback, and both DLC and LM are showing periodic heavy spikes in latency. It seems that the longer my computer is running, the worse it gets. The only thing that I can do to make it back off is restart my network adapter via Device Manager every couple of hours, or restart 2 or 3 times a day. I've run full scans with BitDefender, MalwareBytes, Norton Power Eraser and MalwareBytes Anti-Rootkit. I've checked multiple browsers, even reinstalled them, and the problem persists regardless of what is generating my network activity. The higher the activity, the more severe the latency.

I really don't know what to do by this point, so I thought I'd ask around on here before proceeding with my next two options which are a.) Doing a clean re-install of Windows 10, and, should this fail, b.) Factory-defaulting my PC back to Windows 7 Home Premium.

As always, any advice/insight would be most appreciated.
 
Solution
I am experiencing same symptoms on Vista64 system, the only solution working for me is restoring system back to point where everything is working as I am used to, anything else brings me NO success. But for sure: it have nothing to do with HW configuration, problem is somewhere in drivers and/or with installation of drivers (all from nVidia) and some tracks shows possible connection to MS framework updates makes those Windows slowdown especially loading all games takes five or more times longer. (instead standard less than 1min loading time it take five or more time longer. Help.
operationdarksky@hotmail.com

volkerball3011

Honorable
Jun 13, 2013
48
0
10,540
No replies yet? I'm truly at the end of my rope here, having exhausted basically all of my resources before just doing a clean install. If there's truly no help to be had here, then I shall just go forward with that plan, perhaps sometime later tonight.
 

volkerball3011

Honorable
Jun 13, 2013
48
0
10,540
I've now done a clean reinstall of Windows 10, and it solved precisely nothing; latency readings are the same as before, no changes whatsoever. My only option now is to factory default back to Windows 7. If this doesn't work and I can't find any other advice or info, then it looks like this PC is destined for the trash bin, and I'll probably be on here looking for PC build advice in the not-so-distant future.
 

volkerball3011

Honorable
Jun 13, 2013
48
0
10,540
As a late update to this thread; while I had some issues after reinstalled Windows 10, the reinstallation *seems* to have actually solved the issue. I still get latency spikes into the red, but only under certain circumstances, and it doesn't seem to affect my audio anymore. And oddly, streaming audio or video makes my latency DROP now, for whatever reason.

So that's that, I guess.
 

Stepan 77

Commendable
May 8, 2016
1
0
1,520
I am experiencing same symptoms on Vista64 system, the only solution working for me is restoring system back to point where everything is working as I am used to, anything else brings me NO success. But for sure: it have nothing to do with HW configuration, problem is somewhere in drivers and/or with installation of drivers (all from nVidia) and some tracks shows possible connection to MS framework updates makes those Windows slowdown especially loading all games takes five or more times longer. (instead standard less than 1min loading time it take five or more time longer. Help.
operationdarksky@hotmail.com
 
Solution