Hi try reinstalling the audio and video drivers and see if it helps

 

I have reinstalled audio and video drivers and the stuttering persists.

 

Next thing to check is flash,shockwave and java are all the latest versions

 

They are all updated.

I also tried installing different versions of audio and video drivers, but nothing's changed.

I checked the load on the computer with task manager during the stuttering and not RAM, nor the cores were at full load.

Also for instance I played Elder Scrolls: Skyrim, it worked fine for about half a minute, then the stuttering started. I minimized it and browsed the internet for a while, came back into the game and it played fine like it used to for about half a minute then the stuttering started again. The same happens with League of Legends. The first 30 seconds of playing are fine, then it goes to hell. I don't know much about the inner workings of it all, but it feels like there is a buffer that is too small and after half a minute it fills up, and from that point on the computer struggles.

Lowering all the settings in the games to lowest doesn't affect the stuttering at all.

 

Do either of those need silverlight

 

No, they don't.

 

bump‎‎‎‎ 

 

Ok what video card or graphics chip is on this model

 

Nvidia GeForce GT555M

 

Ok so is this the driver you have Description nVidia Graphics Driver
File Size
158,7 (MBytes) 2011.06.30 update
Download from ASUS - Notebooks- ASUS N55SF

 

I had a newer video driver. And a slightly older driver before that. Now I installed the driver you linked to. It doesn't make a difference.

 

That is the correct driver as far as I can find I would try Driver Fusion - The Complete Driver Solution to ensure all remnants of the drivers are gone then reinstall

 

I removed the driver leftovers with Driver Sweeper. Then reinstalled. Same result.

I did some browsing and discovered that I might have a problem with DPC latency that might cause my stuttering and cracks and pops. So I downloaded LatencyMon and this is what it says:

_________________________________________________________________________________________________________
MEASURED KERNEL TIMER LATENCIES
_________________________________________________________________________________________________________
Highest measured kernel timer latency (µs): 1218,959224


_________________________________________________________________________________________________________
MEASURED SMIs AND CPU STALLS
_________________________________________________________________________________________________________
Highest measured SMI, IPI or CPU stall (µs) 32,188361


_________________________________________________________________________________________________________
REPORTED DPCs
_________________________________________________________________________________________________________
Highest DPC routine execution time (µs): 1804,957175
Driver with highest DPC routine execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 268.74 , NVIDIA Corporation

Highest reported total DPC routine time (%): 0,045124
Driver with highest DPC total execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 268.74 , NVIDIA Corporation

Total time spent in DPCs (%) 0,207528

DPC count (execution time <250 µs): 273074
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 41
DPC count (execution time 1000-1999 µs): 3
DPC count (execution time 2000-3999 µs): 0
DPC count (execution time >=4000 µs): 0


_________________________________________________________________________________________________________
REPORTED ISRs
_________________________________________________________________________________________________________
Highest ISR routine execution time (µs): 353,488383
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Highest reported total ISR routine time (%): 0,090578
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in ISRs (%) 0,160551

ISR count (execution time <250 µs): 283159
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 11
ISR count (execution time 1000-1999 µs): 0
ISR count (execution time 2000-3999 µs): 0
ISR count (execution time >=4000 µs): 0


_________________________________________________________________________________________________________
REPORTED HARD PAGEFAULTS
_________________________________________________________________________________________________________
Process with highest pagefault count: none

Total number of hard pagefaults 241
Hard pagefault count of hardest hit process: 183
Highest hard pagefault resolution time (µs): 296257,424146
Total time spent in hard pagefaults (%): 0,232345
Number of processes hit: 0


I hope someone can read something from this, cause I have no idea what I'm doing.

 

Hi a colleague suggested it may be some software in the background and going by the info here that may not be far off the mark ASUSTeK Computer Inc.-Forum- How to fix sound pop/click/stutter due to DPC latency