GTX 770 random stuttering (FPS drops, freezing) in GTA V

Arthmost

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Jul 27, 2014
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I've been looking for a solution for almost a month now. My GTA V randomly micro-freezes (once in a couple of minutes) for half a second. It's like a massive instantaneous FPS drop for half a second. At this moment GPU load spikes to 0% and then goes back to normal. Update: GPU Power also spikes a bit from ~70% to ~60%. The power and usage are the only two values that do this simultaneously.

Tried most of the proposed fixes:

Lowering or increasing graphic settings
Tweaking nVidia Control Panel
Overclocking / underclocking GPU, CPU, RAM
Disabling / enabling CPU power-saving features
Disabling nVidia Streaming Service
Setting game priority to High, launcher to Low
Switching mouse input to DirectInput
Increasing pagefile
Reinstalling OS
Reinstalling game
Reinstalling drivers

A screenshot of what happens when a stutter occurs.
Another one with power graph
Another one.

My specs:
Intel i5-3570k 4800 MHz
Gigabyte GTX 770 4 Gb OC 1293/7500
8 Gb DDR3-1866 CL11
Corsair TX650W

Temperatures in-game:
GPU ~60-70C
CPU ~60-70C

What is causing this and how can I fix it? I assume this isn't game optimization since there are people who don't have stuttering at all.

My theories:
■ PSU can no longer reliably supply the power being drawn (it's ~3 years old) and sometimes 12V line spikes down
■ GPU vBIOS is making it throttle itself at temps around 70C for some reason, might need an update
 

Arthmost

Reputable
Jul 27, 2014
21
0
4,520


No updates as of yet. I'm hopeless.

Yes, this currently happens only when I play gta 5. Even when I run something like Kombustor or Furmark that burns my GPU to 100%+ usage it never stutters. Latest drivers (gta 5 ready).




About 2.8-3 GB VRAM used.
Yes, I've tried running on stock clocks.