My Lenovo G27q-20, which is a Gsync compatible certified device, has a VRR range of 48-165Hz. When frame rate drops below 48fps, there is a noticeable stutter event happening. I can reproduce this in Strange Brigade native Vulkan (Proton) by increasing render resolution scale to 200%, so I can drop …

@aufkrawall Can you please try once with Latest Production Branch Version 515.48.07 . If issue still persists, please share nvidia bug report and repro video for reference.

515.48.07 still shows the issue. How I can reproduce the issue in Strange Brigade: [Gsync compatible VRR LFC stutter when dropping below 48Hz - Nvidia Linux] Note that the issue itself can’t be captured on a video, and also capturing the screen with an external camera probably wouldn’t…

VRR LFC is still broken in 570.86.16 driver on RTX 3060 (and presumably any other Nvidia GPU). Strange Brigade Windows 36fps: Monitor runs at stable 72Hz and result is smooth and doesn’t flicker. Linux 36fps (both Xorg and Wayland, both proprietary and open Nvidia kernel module): Monitor refresh r…

Oh so it’s not just me. I notice this same behaviour on my RTX 3060 Ti. On Windows LFC is perfect, on Linux it basically just doesn’t work. I’m also on driver 570, but even when I was on 565, 560, 550 and 545, the issue was still present. Xorg or Wayland, doesn’t matter. Exact same symptoms as you…

Yeah. Also, the Windows driver recently has received an improvement for VRR LFC. The Nvidia Linux devs really should take a look at how the Windows driver does it. @amrits Any update on forwarding this to the driver devs?

Seems like LFC still does not seem to work on 575.64.03. Playing a game with locked 30fps, with a monitor with vrr range 32-175hz, I should in theory be seeing 60hz on my monitor OSD. Instead I see 175Hz, because vrr wasn’t able to kick in.

Im having this issue too. Works perfectly on windows. I used VRR test and get no flicker throughout my whole monitors refresh rate range (165 all the way down to 3 fps). LFC is broken. My refresh rate constantly fluctuates erratically when at a low fps

On Windows 581.29 it’s working as intended. With recent 580.95.05 linux drivers it’s still the same issue. I’m using Gnome+Wayland. Since X11 support has been dropped in Gnome. In my case I’m using “iiyama GB2770QSU-B1” that does have “Freesync Premium Pro”. In freesync range 40-165, monitor wor…

Nvidia has now mentioned they have filed an internal issue for problems with LFC: 580 release feedback & discussion - #354 by amrits

Gsync compatible VRR - Low Framerate Compensation (LFC) transition not seamless, unlike on Windows

Graphics / Linux Linux

LaggyKar March 1, 2025, 4:34pm 7

I’ve been seeing that too, I’ve reported it in Wildly fluctuating refresh rate and flicker at low framerates

1 Like

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Gsync compatible VRR - Low Framerate Compensation (LFC) transition not seamless, unlike on Windows

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