FPS stutter in 1 second intervals

rocker5743

Prominent
May 12, 2017
6
0
510
Trying to figure out what is causing this micro stutter. About once every 1-1.5 seconds my games skips ahead like it missed displaying a frame. It is not apparent when the camera is moving slowly, but when it is moving at a normal speed it is very noticeable and irritating, can't get over it. It is extremely noticeable in top down/isometric games where the camera tracks your character while panning the map, as opposed to a normal 1st/3rd person 3D game.

Using Witcher 3, I get around 90-95 fps with no v sync, a lot of screen tearing, but no (noticeable) stutter. When I turn v sync on the stutter is introduced, screen tearing is fixed, and I get 59/60 fps. Most of the time the second interval stutter coincides with the fps reading quickly going 60->59->60. GPU load going in quick jumps from 0 to 100% usage, CPU load averaging around 36%, temps are fine.

Using Stardew Valley I get the same 59/60 fps with the stutter. GPU usage in minimal, and CPU usage averages at 19%.

Using Diablo 3. Without v sync I get around 110-125 fps. It is hard to tell if the stutter is there because of the screen tearing but I don't think it is. With v sync its back to 59 fps, and the stuttering. Fullscreen, or borderless windowed showed no change.

I would think it would be a hardware bottleneck issue if it didn't still occur at low usage. Lowering graphics setting in Witcher and Diablo 3 did not make it go away. Still couldn't hit a stable 60 fps even though without v sync I hit above 60.

There are my computer parts.
GPU: AMD R9 390, not overclocked (Afterburner crashes my computer on open)
CPU: Intel i5-3570k
OS: Windows 10
RAM: 12 GB DDR3

I have tried doing clean uninstalling of drivers using DDU, and reinstalled the latest and older versions. Disabled flux. Used Hardware Monitor to check stats/temps/etc. AMD control center can't force v sync so it's turned on/off in game.

Also using Unigine Valley my FPS was 81.4 with score of 3407 if that means anything.
 

rocker5743

Prominent
May 12, 2017
6
0
510


I've removed and installed it over and over, new versions and old. I have no idea why, but the afterburner issue has been going on for a long time. Even after I went from Windows 7 to 10 it still happens.
 

rocker5743

Prominent
May 12, 2017
6
0
510


According to GPU-Z it's around 1.8 GB for Witcher 3. Stardew Valley uses basically nothing though and it still happens there.
 

rocker5743

Prominent
May 12, 2017
6
0
510


I'm using HWInfo64 for temps and everything, it's all normal. Radeon control center lets me control GPU fan temp so that's fine.
 

rocker5743

Prominent
May 12, 2017
6
0
510
I did a clean install of Windows 10 since initially I had done an upgrade from 7 to 10 on the machine. For now the issue appears to be gone, tested in both stardew valley and diablo 3 just now. Hopefully this helps other people who have this issue. Also my monitors refresh rate was set to 60. Also remember to exit flux entirely, not just disable it.

And also the clean install did not help my issues with Afterburner.
 

Carnaxus

Reputable
Apr 18, 2017
1,431
3
5,665
Well, here's an interesting bit I just found. Try setting "EnableUnOfficialOverclocking" to 1 in the Afterburner config file located in the main Afterburner folder. If your card is "locked," Afterburner apparently won't run unless you change that.

Since you have an AMD card, you could also just unlock it using AMD Overdrive; if that was indeed the issue, Afterburner should work then.