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Windows 7: ndis.sys causing high DPC Latency

17 Jul 2013   #1

Windows 7 Ultimate x64
ndis.sys causing high DPC Latency

I was playing, when I noticed that about every minute, for about 10 seconds my fps went down to about 10-12, and with a little searching on the internet, i figured out it was because of the high DPC Latency. I downloaded LatencyMon and DPC Latency Checker, and it showed that most of the time it was around
150-200 μs, but about every minute, it went up to 3000-3500 μs. I checked the execution times with LatencyMon, and the highest was ndis.sys with 5.2 ms. I disabled the wireless adapter, hoping that it will solve the problem, but it didn't work. I still get these spikes, and now the highest was rspLLL64.sys with 0.5 ms. Strangely, I didn't get any pops and cracks while listening to music, as long as the wireless adapter was enabled. After I disabled it, they appeared. I tried updating the wireless and the audio drivers, but they didn't solve the problem. I've been searching for the solution for about 1-2 weeks, but i didn't find it. I would be grateful if any of you could help me.

PS: Sorry if my english is bad, it's not my native language.


My System SpecsSystem Spec


 ndis.sys causing high DPC Latency

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