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Paying 25eur for the solution: DPC Latency issues (cracking sound)

dpc latency windows cpu gaming

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#1
Wybrem

Wybrem

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Hello,

 

I've had about enough of this issue, it is driving me insane, and it seems that nobody can help me with it. That's why I offer 25eur (~30usd) for the reply that leads to the solution of my issue.

I have HUGE DPC Latency lag, it starts to get worse, it seems. First things first, let me share my computer specs with you guys:
CPU: FX-9590 @ 4.72GHz, GPU: 2x AMD R9 390 8G, RAM: 32GB DDR3 2400mhz, MOBO: Asus Crosshair Formula-Z, PSU: 1000W CoolerMaster Gold, SSD 850 evo Samsung.

Here some special changes in Windows:
NO PAGE FILE (issues was there before I changed this to "no page file"), Energy settings set to High Performance.

Here's what I've done so you can skip that:
Updated BIOS, Updated audio drivers, Updated AHCI drivers / sata drivers, Reinstalled GPU drivers (removed with DDU), Ran Windows Performance Analyzer, Ran LatencyMon, Ran DLC (all report serious issues), freshly installed Windows 8.1, Flashed BIOS, 

What do I experience:
Fequent mouse stutter, sound stutter/cracking, lagg,

When does this happen?:
I started to notice it ingame, mostly, but also when not gaming. The biggest issues come from USBPORT.SYS (non gaming) and DXGKRNL.SYS (when gaming) according to LatencyMon.

When did it start happening?:
For as long as I can remember on this rig, but I strongly believe since I got new video cards (MSI 390 crossfire, before GTX 560 Nvidia) , however it's getting worse now that I updated all drivers, or maybe I pay more attention to it now, who knows?

Screenshots:

When not gaming:
07a365babd.png

 

When gaming:
e9ef82dd48.png

Here is a snapshot (.etl file) of SDK for Windows: http://puu.sh/lgnc0/d7ba03d0ef.rar (Windows Software Development Kit)
^however that is a Chinese to me.

Please help, I'm going nuts here.


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#2
Wybrem

Wybrem

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I've found the causes. Direct X issues is caused by AMD crossfire AND vsync on in games. The other lagg was caused by the 2400mhz ram, it's gone when downclocked to 1333, 1600, 1866. AMD stated that this is known with their fx builds. How great AMD is ha?


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