Question CPU usage all over the place

samprinsen

Honorable
Feb 21, 2015
187
4
10,695
Hi,

Yesterday, I received my RTX 2070 super, and I've been trying out some games. For some reason, no clue if it is related, my CPU usage is all over the place in PUBG and BF5, going from 30 percent to 60 to 40 to 80 in the span of 2 seconds. BF5 was already running pretty poorly before the GPU upgrade, so that didn't surprise me too much. I was wondering if a new GPU could be the cause of this weird CPU usage.

i5 8600K @ 4.00 Ghz
BeQuiet 750W bronze PSU
Z370 Extreme4 MOBO
2 samsung 750 EVO SSD's (one of them is also running poorly, as I found out today)
16GB Ram

I already tried transfering PUBG from the dying SSD to my other, with no succes. I just have a lot of stuttering in PUBG and BF5. In the Heaven benchmark, the CPU is also just going from 30 percent usage to 70 to 40 to 80 every second ( I know its for the GPU, but maybe its important to state).

(maybe important to note that when Idle, the CPU usage also keeps peeking and falling every second)

Another important thing to note is that I updated to Windows 10 today, if that could be revelant. (from 8.1)
 
Last edited:
cpu/gpu tem during the game?
The temps seem to be okay, GPU is at about 70 degrees to a max of 84. CPU stays under 60. Another thing I just noticed, is that the CPU usage in task manager is at 100 percent all the time (during PUBG), and in MSI afterburner, the individual cores are all over the place like mentioned before.
 
Any new-build-new release of Win10 system will often be busy for an hour or so pulling in yet more updates...

You might want to examine CPU-Z/bench/stress test and HWMonitor to confirm your clock/boost speed behavior is normal, and temps are under control with no evidence of throttling...

Lastly, if some glitch occurred with drivers relating to the update, you might want to fresh install your OS and games to whichever SSD is known to function fine and retest... (A fresh install will cure glitches, malware, etc.)
(Make sure you reinstall all mainboard chipset drivers and GPU driver packages...)
 
UPDATE: I just found this video (
View: https://www.youtube.com/watch?v=WnKDPLjbg_I&t=1s
), and it made the stuttering in PUBG about 70% less frequent. So it isnt completely gone, but a lot more bareable. It helps getting rid of build-up memory cache. I will try your responses as well, thank you very much! I will redownload BF5 now to see if it also helped that game.

UPDATE: BF5 is also tremendously more playable now because of the video!
 
Last edited:
UPDATE: I just found this video (
View: https://www.youtube.com/watch?v=WnKDPLjbg_I&t=1s
), and it made the stuttering in PUBG about 70% less frequent. So it isnt completely gone, but a lot more bareable. It helps getting rid of build-up memory cache. I will try your responses as well, thank you very much! I will redownload BF5 now to see if it also helped that game.

UPDATE: BF5 is also tremendously more playable now because of the video!
so this or OC fixed it?
https://forums.tomshardware.com/threads/rtx-2070super-issues.3504673/#post-21178469
 
I've run into that issue on a few occasions. In my case, it was usually a problem with Windows Update. There's various fixes you can try, or if you can reset Windows.