Windows 10: High end build, stuttering in every game

Yes, I suggested to the OP to monitor all voltages. If they are not stable at all times, that could be the issue. I don't know it any action has been taken on this regard. Either way, GTA issues should be eliminated by troubleshooting this issue on another game, known to be stable. GTA is far from stable.

 

If it's just micro-stuttering:
It could be a system timing conflict(Windows own system timer vs. HPET in BIOS), in your case, with system timing, enabling or disabling(opposite of the current setting) HPET in BIOS, and see if it helps.

A good tool to test if your system timing is the problem is WinTimerTester: WinTimerTester_1.1

also read this:
TWEAK: Enable HPET (in BIOS and OS) for better performance and FPS - OS Customization, Tips and Tweaks - Neowin

 

To test it use the stress test in CPU-Z

 

Before enabling HPET in Windows I've got 3.4 Mhz and the Ratio hit the 1 stable after a while ~110 QPC / GTC (no CPU-Z stress test).
Enabling HPET in Windows will raise the QueryPerformanceFrequency to 24.00000 MHz and the Ratio is unstable (0.999 ~ 1.0001 ~ 1.0002) during the CPU-Z stress test.
EDIT: Ratio will be stable at 1 after ~250 QPC / GTC (no CPU-Z stress test)
I recently updated the BIOS motherboard to the latest 3504 version and I didn't touched any of the default options, the only thing I enabled is the XMP profile for the RAM to run them at 3200, everything else is stock.
There's no option for HPET in ASUS z170 BIOS.

EDIT2:
The system doesn't feel smoother than before, in game (Rocket League) there's a lot of micro-stuttering (VSync off) but enabling HPET in OS fixed the DPC latency

 

Is the micro-stuttering only in game, or, in benchmarking tools too, like Fur Mark, MSI Kombuster, Unigine or 3D Mark... etc benchmarks?
I don't mean the games benchmarks, sorry...

 

During Heaven benchmark I get no micro-stuttering and the score is the same as before (actually I've got 15~20 points less) and the framerate in RL is unstable (144 fps cap, 141~143 fps)

 

Also if the stuttering is only when you're moving in the game, can you swap your mouse, and keyboard out with other ones, to see if it's USB polling(and DPI sensitivity) problem?

 

Something I just found: (Micro) Stutter in almost every game! - PC Gaming

 

I unplugged mouse and keyboard and played with my XBOX 360 controller and viceversa, it didn't helped.
Also it will take longer to open the in game menu and to apply settings

 

The only other thing I can think of, is, if you haven't already tried: set BIOS(save current OC & BIOS profile first, if your mainboard allows it), Windows, GPU/NVIDIA Control Panel, and a game to default settings, and if the problem isn't there then, make changes one at a time or in group types, to see what is causing the problem.

 

I was having a read about VSync discussion over the internet.
I read a lot of topics about stuttering introduced when VSync is enabled caused by GPU that can't handle the monitor refresh rate, example: you are at 60hz, 60 fps and you will drop to 30 if the framerate goes down to 57. But that's not my case, when I have VSync enabled in Rocket League, my fps is 144 solid but it will never significantly drop and cause a huge stuttering, what happens is that the framerate will drop to 138~140 causing a micro-freeze of the image. Same things happens on GTA V (single player) when VSsync is enabled. I hope you've got the point.

 

This is a video showing how stuttering looks like in Rocket League:

Rocket League V-Sync stuttering - YouTube

notice the fps drops, this is the fps graph in Afterburner:








highest drops are match joining, alt-tab and menu openings. As you can see the stuttering appears when fps drops down in the range of 130~140 and looks like a stuttering, is this a common effect of VSync?

This is the framerate when VSync is off:







Fps drops are alt-tab, menu etc.
As you can see it never go down 144, max settings, VSync off in game and enabled in the Nvidia control panel, Triple buffering on. Adaptive cause less stuttering but cause tearing sometimes.
Can you explain? Isn't VSync to drop the framerate half of the monitor refresh rate? Why isn't that drop reported? What are those micro-freeze?

 

Nvidia support told me it is a Creators update issue and suggested me to roll back to Anniversary

 

Sure, they always try to blame someone else. I doubt that will solve anything in the long run. You will be forced to go to Creators update eventually anyways, so the issue should be solved another way...

 

Rolled back to Anniversary update suggested by Nvidia, nothing changed lol
But I'm still here and I'll keep investigating, I recorded an .etl performance track, I noticed a latency spikes in the GTA.exe process, analysing the GPU queue you can see there's no packets being processed, there happens the stuttering / image freeze: