CPU/GPU Usage Fluctuation, Stuttering

Some Damn Author

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Oct 2, 2014
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My CPU and GPU usage is all over the place when I game. Performance is consequently taking a hit, with constant stuttering. I'm observing a fairly good framerate, but it always tanks suddenly and quite often.
GTA V, for instance, ran on my old GTS 450 at 1400x1050 without any stuttering issues. However, with my GTX 960 I'm not able to achieve even the same level of performance without sudden stuttering.

Here's a link to a screenshot with my CPU and GPU usages while running Watch Dogs 2 at Low, with Resolution at 1680x1050:
http://imgur.com/E8FaI3f

Note that in the screenshot, the CPU usage is at 15%, it spikes back up to the 80's and 90's and then tanks to the 20's, etc. This spiking happens simultaneously with the GPU usage too. Also I did notice that my Disk Usage is at 100% does that have anything to do with this?

Any and all help would be appreciated.

Specs:

Intel Core i5-4430 3.00GHz
Nvidia MSI GTX 960 2GB
4 GB DDR3 RAM

 
Solution
Yes, disk usage at 100% plus only 4gb of ram suggests stuttering is caused by low amount of memory. Some of the data used by game is in page file when physical ram is not enough - and page file is physically on disk. So when game needs this data, it has to load it from disk to ram, and during that CPU has nothing to do, causing its usage to drop. Check your ram usage to be sure.
Yes, disk usage at 100% plus only 4gb of ram suggests stuttering is caused by low amount of memory. Some of the data used by game is in page file when physical ram is not enough - and page file is physically on disk. So when game needs this data, it has to load it from disk to ram, and during that CPU has nothing to do, causing its usage to drop. Check your ram usage to be sure.
 
Solution

misteriosly

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Jun 1, 2015
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First monitor your CPU temp also please.
Second if you check your screenshot, you will see that you are out of RAM, and Disk C usage is 100%, which may be the reason because of which you see that stuttering.
Probably if you get another 4g ram, you could solve that problem.
Since now when u have enough performance to move through areas, it loads more and more levels/models.

Edit: just saw that you noticed the ram usage. same like Dragor i agree that this is happening because of RAM.