Think my CPU is Throttling?

CPU: i5 6600k
GPU: R9 380x
MOBO: Gigabyte z170-HD3

I've had this issue for soooo long. Seems to happen in only GTA 5 as I haven't experienced it in any other game. My cpu seems to go up to 100% and stay there for a while then suddenly drop down to 40-60% which causes my game to stutter for a second. I usually have Chrome open which makes it happen more frequently, but with it closed it still happens no matter what.

Any suggestions?
13 answers Last reply
More about cpu throttling
  1. What are your CPU and motherboard temps under load? Use OCCT to stress test and monitor with HWMonitor. Let it run for a while to max out the temps.
    http://www.ocbase.com/
    http://www.cpuid.com/softwares/hwmonitor.html

    If you want. You can also toss in Unigine Valley (GPU test) at the same time as OCCT to put the full system under load. To see if your case cooling is good enough to keep everything cool.
  2. Try to monitor your HDD when this happens, if you are on a standard spinning disk and not a solid state drive, it could be loading resources (I know GTAV is a little bad in this regard). It could be the system slowing down waiting for the HDD.
  3. If your CPU was throttling then it would remain at 100%, but the clockspeed would slow down and you'd be using 100% of a slower speed, hence the throttle.
  4. velocityg4 said:
    What are your CPU and motherboard temps under load? Use OCCT to stress test and monitor with HWMonitor. Let it run for a while to max out the temps.
    http://www.ocbase.com/
    http://www.cpuid.com/softwares/hwmonitor.html

    If you want. You can also toss in Unigine Valley (GPU test) at the same time as OCCT to put the full system under load. To see if your case cooling is good enough to keep everything cool.


    Sorry, text box to edit my post was bugging out so i didn't get to mention that I have looked over temps also, while playing gta v, and while using other stress testing software. I just did what you said and here are the results of running it for 10 minutes: http:// for the record i have never seen my cpu go over 70C. Also during that test the cpu usage would go down to 80% just like how it does within gta. I do notice with HWMonitor, that TMPIN1 seems to be -54C though lol
  5. burdenbound said:
    Try to monitor your HDD when this happens, if you are on a standard spinning disk and not a solid state drive, it could be loading resources (I know GTAV is a little bad in this regard). It could be the system slowing down waiting for the HDD.


    This was actually one of the first things i did, i moved the game to my ssd haha.
    Sadly didn't change anything
  6. 13thmonkey said:
    If your CPU was throttling then it would remain at 100%, but the clockspeed would slow down and you'd be using 100% of a slower speed, hence the throttle.


    Oh, what could this be then? - CPU seems to stay close to 4.4ghz constantly, but Usage is always dropping.
  7. Try playing it in offline mode. Try turning on VSync.
  8. Ethan123 said:
    13thmonkey said:
    If your CPU was throttling then it would remain at 100%, but the clockspeed would slow down and you'd be using 100% of a slower speed, hence the throttle.


    Oh, what could this be then? - CPU seems to stay close to 4.4ghz constantly, but Usage is always dropping.


    Your GPU could be throttling, hence requiring that the CPU feeds it less, hence the drop in utilisation.
  9. velocityg4 said:
    Try playing it in offline mode. Try turning on VSync.


    Tried both, vsync does help, but the stutter is still there.

    I have also just noticed from running a GPU stress test, that HWMonitor is saying that the Voltage for the GPU is 0.003 V. That is not normal isn't it? - or it's probably just a sensor messing up.
  10. What % usage is your GPU doing before, and while this is happening to the CPU?

    What could be happening is your hitting a section that is very demanding on the GPU, so it will shoot to 100%, and your CPU doesn't actually have as much to do at that moment so it's usage drops. Basically the CPU drop is indicating it doesn't have anything to do because something else is being held up.
  11. 13thmonkey said:
    Ethan123 said:
    13thmonkey said:
    If your CPU was throttling then it would remain at 100%, but the clockspeed would slow down and you'd be using 100% of a slower speed, hence the throttle.


    Oh, what could this be then? - CPU seems to stay close to 4.4ghz constantly, but Usage is always dropping.


    Your GPU could be throttling, hence requiring that the CPU feeds it less, hence the drop in utilisation.


    Just played it for a bit watching everything including GPU utilization, and I would see the utilization go down a lot, i would frequently see 0% and 14% but I would get no fps drops, here is a graph of the activity and clock rates while i was playing: Imgur link, i would only experience stuttering when the GPU clock drops, not when the activity drops. There would be large stutters when CPU and GPU drop, CPU = 60%, and GPU = 300mhz, and there would be micro stuttering sometimes which is caused by only the GPU clock dropping. When I do things such as large explosions, the fps drops a lot, CPU usage drops a lot, but utilization is 100%. CPU utilization for all the cores was always around 90%
  12. burdenbound said:
    What % usage is your GPU doing before, and while this is happening to the CPU?

    What could be happening is your hitting a section that is very demanding on the GPU, so it will shoot to 100%, and your CPU doesn't actually have as much to do at that moment so it's usage drops. Basically the CPU drop is indicating it doesn't have anything to do because something else is being held up.


    Yes, i just played and when I did explosions it did exactly what you just said.
    GPU activity jumps A LOT, but this doesn't seem to effect the fps.
    Imgur link - that drop near the start, where the green line and blue line are at the bottom, that was the moment the CPU decided to drop as well.
    When the green line drops, thats when i get stutter. The activity dropping doesnt seem to effect anything shown towards the end as I didnt get any frame drops as the core clock was still at around 900mhz.

    EDIT:: also, my ssd utilization was at a constant 89%, don't think that means anything, but it's still at 89% as im typing this without the game open so i think its frozen lol
  13. I ran a benchmark program, CPU was at 100% constantly, GPU was always 900-1030mhz, FPS was constantly 200 fps, no stuttering at all.
    Graph: Imgur link
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