L latka New member Joined Aug 3, 2013 Posts 4 Aug 9, 2013 #1 Hello. I am running Windows 7 (64) and am having latency issues. I ran an xperf and the results showed a large spike on nvlddmkm.sys (Actual Duration 688). I reinstalled the nvidia driver and it did not solve the problem, nor did performing a Windows Memory Test, which found no problems. In addition I made sure Windows Update had everything up to date. Last week the latency was spiked nearly all the time, but now it just comes and goes. Here are some shots: ^^^ Last Week ^^^ Current Here is my operating system info: OS Name Microsoft Windows 7 Home Premium Version 6.1.7601 Service Pack 1 Build 7601 Other OS Description Not Available OS Manufacturer Microsoft Corporation System Name LATKA-VAIO System Manufacturer Sony Corporation System Model VPCF226FM System Type x64-based PC Processor Intel(R) Core(TM) i7-2630QM CPU @ 2.00GHz, 2001 Mhz, 4 Core(s), 8 Logical Processor(s) BIOS Version/Date American Megatrends Inc. R1170V3, 4/20/2011 SMBIOS Version 2.7 Windows Directory C:\Windows System Directory C:\Windows\system32 Boot Device \Device\HarddiskVolume2 Hardware Abstraction Layer Version = "6.1.7601.17514" Installed Physical Memory (RAM) 8.00 GB Total Physical Memory 7.98 GB Available Physical Memory 5.35 GB Total Virtual Memory 16.0 GB Available Virtual Memory 12.6 GB Page File Space 7.98 GB Page File C:\pagefile.sys Thanks!!!