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Windows 7: High DPC latency, ndis.sys potential culprit. Stuttering I/O

01 Oct 2012   #1

Windows 7 Professional x64
High DPC latency, ndis.sys potential culprit. Stuttering I/O

I am running Windows 7 Professional 64 bit on

Core i7 920
eVGA x58 SLI
GTX 460
6GB of DDR3 1600 MHz RAM
ADATA 128GB SSD (system partition)
WD Caviar Black 1TB
Seagate 300GB

Recently started to experience weird stuttering / lagging inputs. ie Mouse won't move smoothly - if I move the mouse in a striaght line, it will pause for a split second, maybe 100ms or less, at random intervals. I discovered through the diagnosis in this thread:

PC Stuttering mouse/audio/video lag

That I had high latencies. I noticed that when my IO pauses, any playing video will stutter as well (the sound and the graphical components).

I wish to rid my computer of these problems. I'm not an idiot with computers butI've never had this happen to me. Already tried to reinstall my network, audio and chipset drivers as well as tuning my network card's settings. Nothing has helped thus far.

I have two attached screenshots of looking at my xperfs:

My System SpecsSystem Spec


 High DPC latency, ndis.sys potential culprit. Stuttering I/O

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