Capping below refresh rate causes stutter with Gsync (log provided)

Talk about NVIDIA G-SYNC, a variable refresh rate (VRR) technology. G-SYNC eliminates stutters, tearing, and reduces input lag. List of G-SYNC Monitors.
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Argus
Posts: 46
Joined: 06 May 2021, 17:07

Capping below refresh rate causes stutter with Gsync (log provided)

Post by Argus » 06 Jan 2026, 20:38

when I set my monitor to 165hz and cap fps to 120 (via RTSS) I get a terrible stutter in games.
I used Dynamic Refresh Rate Tool to see if gsync really was working the result was that the monitor was jumping wildly between 100 and 165hz constantly
I read the logs and it constantly alternative between running at 120hz and 144hz. Furthermore, is says the number of frames at 120hz was 44% of the total, while the number of frames at 144hz was 9% and "Other frames" was at 45%
What is going on here?
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Argus
Posts: 46
Joined: 06 May 2021, 17:07

Re: Capping below refresh rate causes stutter with Gsync (log provided)

Post by Argus » Yesterday, 10:44

kyube wrote:
11 Jan 2026, 20:39
Argus wrote:
06 Jan 2026, 20:38
A bit more information is required, namely a list of your hardware's components & your software setup.
Include the peripherals you're using as well.
Specs:
Monitor: Omen 27q 240hz IPS
CPU: 9800x3d
GPU: 4080 Super
Ram: 64gigs running a 6000hz 36-36-36-72
Mouse: razer deathadder v3 (the original post I made was testing games I played with a controller though)
OS: Windows 11 IoT Enterprise LTSC 24H2

Also, I tried the same OP method again but this time at 240hz and capping in game to 165fps and got an even worse stutter effect. I've also tried various combos of vsync on/off in control panel and in game and still got the same stutter each time.

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kyube
Posts: 621
Joined: 29 Jan 2018, 12:03

Re: Capping below refresh rate causes stutter with Gsync (log provided)

Post by kyube » Yesterday, 11:18

Argus wrote:
Yesterday, 10:44
Specs:
Monitor: Omen 27q 240hz IPS
CPU: 9800x3d
GPU: 4080 Super
Ram: 64gigs running a 6000hz 36-36-36-72
Mouse: razer deathadder v3 (the original post I made was testing games I played with a controller though)
OS: Windows 11 IoT Enterprise LTSC 24H2

Also, I tried the same OP method again but this time at 240hz and capping in game to 165fps and got an even worse stutter effect. I've also tried various combos of vsync on/off in control panel and in game and still got the same stutter each time.
What motherboard, SSD, PSU?
What specific games were you experiencing this in?
What GPU driver version?
What frame rate limiters have you tried using? The options you have are:
- In-game,
- RTSS Async / Front-Edge / Back-Edge / Scanline-Sync / RTSS Reflex
- Nvidia's Max Frame Rate (behaves differently when Reflex is enabled or disabled)

Macrostutters are usually a sign of ill-configured HW (UEFI) or SW (OS)
That DRAM timing profile is a red flag, in my eyes. Large potential for instability...

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