Gaming at high frame rate for 10-20 minutes then dropping down to low frame rate and sustaining

I don't understand how or why this happens. I'll be gaming for a while (PUBG, Hellblade, GTA V) and my FPS will tank and stay in that range. What's the issue?

PC:
CPU: i7 6800k
GPU: GTX 1080 Ti
Mobo: MSI X99A SLI Plus
RAM: 16 GB

Edit: Also gaming at 1440p
Reply to DaveyFTW
12 answers Last reply
More about gaming high frame rate minutes dropping low frame rate sustaining
  1. Hi, what is temperature of your cpu and gpu when your fps starts dropping?
    Reply to MMorris666
  2. GPU: 65 C degrees
    CPU: 62-68 C degrees

    No thermal throttling
    Reply to DaveyFTW
  3. Interesting, this usually would lead me to believe it is something with overheating, but your temps are pretty low. Could you share the CPU and GPU usage when these drops happen?
    Reply to Darkvillain
  4. GPU is around 100-110
    CPU about 90% max
    Reply to DaveyFTW
  5. Do your cpu and gpu speeds (Ghz) drop when this happens?
    Reply to sizzling
  6. GPU stays at 2012 Mhz (OC'd)
    CPU, I guess I don't monitor the freq. If it doesn't, could it be the cpu? I have it OC'd at 3.7
    Reply to DaveyFTW
  7. Oh and I just booted up Rainbow Six Siege. I shouldve been getting crazy FPS but averaged at 30. Fucking waste of money
    Reply to DaveyFTW
  8. If the cpu speed drops then the cpu is being throttled, it is then a case of working out why.

    I'd also take off your OC, a bad OC could cause problems.
    Reply to sizzling
  9. I took the OC off and Im having the same issues. D:
    Reply to DaveyFTW
  10. i don't know what the thermal limit is for the 6800k, but it seems like I may be hitting it. After many hours of testing with no OC's and OC's, get around 65-68 C regardless and my FPS will drop. I guess I need a better cooler and/or thermal paste. (Astek 510) or figure out how to raise the temp threshold on my CPU (never gonna happen)
    Reply to DaveyFTW
  11. Did you prove the cpu speed was dropping?
    Reply to sizzling
  12. Hope all worked out well!
    Reply to Darkvillain
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