G-SYNC Specific Stutter Dell S2721DGF

[SireNightFire]

Hello! So I've noticed plenty of topics regarding G-SYNC and stutter however I seem to be having a more specific problem with my monitor. I've noticed that even if I follow the general rules for G-SYNC'ing. Such as limiting my frame rate below monitors refresh rate, enabling v-sync in NVCP, and turning it off in-game. My games still stutter and show frame time issues. However, it's only for specific titles. Games like Helldivers 2, Deep Rock Galactic, BF2042, Persona 3 Reload have no issues with my G-SYNC. Whereas titles like Cyberpunk, Returnal, Avatar: Frontiers of Pandora, are NOT compatible with my G-SYNC. If that's even possible? Titles where I have these issues show no sign of becoming smooth with any sort of setting enabled or disabled with G-SYNC on. Limiting to even 60 looks horribly stuttery. However for these titles if I fully disable G-SYNC (fixed refresh rate does not work in NVCP.) it is absolutely smooth with 0 frame time issues (Cyberpunk and Returnal have their own occasional stutters separate from this monitor issue.)

Any help with this would be awesome. Or even help with setting up hotkeys to change settings on the fly. It's terribly annoying manually swapping settings all the time. Is it possibly that the monitor isn't really all the compatible with G-SYNC? It is originally a freesync monitor.

[RealNC]

G-sync doesn't fix stuttering games. It prevents judder due to FPS and refresh rate mismatch, as well as eliminating vsync lag. If a game stutters, g-sync can't do anything about it.

[SireNightFire]

G-sync doesn't fix stuttering games. It prevents judder due to FPS and refresh rate mismatch, as well as eliminating vsync lag. If a game stutters, g-sync can't do anything about it.

I do fully understand that part. I'm just wondering why g-sync off seems to look/run better than it being on at all. Visually Cyberpunk 2077 looks fantastic with v-sync and a locked 60 FPS. When using g-sync though the result is something pretty hard to look at. Driving becomes a sort of hitching mess and looking around seems to have a rubber banding effect. Not a problem with g-sync disabled. My frametime graph also shows the exact hitching I'm seeing with g-sync enabled. Whereas the frametime graph is smooth when it comes to a locked v-sync with no g-sync. I could see v-sync being smoother in situations where a frametime spike isn't noticeable at 60 FPS. But g-sync shows very irregular and frequent spikes from general camera movement.

Would all of that just mean the game itself doesn't play well with VRR? To me that doesn't seem likely and would more likely be a hardware issue. (I have tested each component below and have found zero faults with any of it.)

Specs: 3080, 13700k, 32GB RAM 7200mhz CL34, Firecuda 530 storage, and on W11.

[yamaci1775]

I'm having a similar problem with my xg2401 (non validated screen) and a 3070. Can you check the videos in this thread I posted and confirm if they're similar?

My problem is that, once upon a time, I didn't have such an issue. I played ac valhalla with nvidia's 60 FPS lock and the refresh rate readout was literally a perfect 59-60-61 with super smooth visuals. This problem has been bugging me since recently and I just cannot get that kind of a smooth 60 fps experience out of VRR anymore. To me it feels like it has to do with WDDM versions new windows builds are shipping with because I tried W10 and W11 and also very old drivers but can't seem to fix it. Only remaining possible explanation than is that something within the WDDM that is responsible for frame presentation has changed and affected certain builds, monitors and configurations. I'm not sure, of course, just random thoughts.

viewtopic.php?f=17&t=13478&p=105766#p105766

What is even more infuriating is that almost all benchmark tools pretty much shows a perfect 60 FPS. I even see perfect 60 FPS with perfect 1% 60 FPS lows on BOTH after present and before present graphs in Rivatuner overlay. And I can literally get that perfect 60 FPS experience if i just disable the VRR and rely on Vsync completely. This problem drives me nuts because now I have lost the flexibility of being able to enjoy random arbitrary framecaps such as 36/40/45 FPS etc. as fractional Vsync adds insane latency that is not there with console versions of games.

Hey, at least you only see spikes on your frametime graphs. I don't, which is extra infuriating. And clearly I don't have any spikes, if I can get super smooth 60 FPS vsync experience.

Only other logical explanation is that these games are built around streaming with vsync buffer in mind. If that's the case, well, it is pretty sad and these games should be deemed incompatible with VRR. But then again, I really should try Valhalla and see if it will play smoothly. If it doesn't, it means a new update or new Windows build caused the issue and it goes unnoticed.

[daylight_EX]

I'm having the EXACT same issue as you guys. I'm using an M28U monitor and I've found I have to disable VRR entirely and use a fixed refresh to get a 60fps cap from NVCP/RTSS to be smooth.

[SireNightFire]

I'm having the EXACT same issue as you guys. I'm using an M28U monitor and I've found I have to disable VRR entirely and use a fixed refresh to get a 60fps cap from NVCP/RTSS to be smooth.

I'm still at a loss on what it could be. There are clearly game with stutter problems and games without. However if the stutter is resolved by removing G-Sync it's definitely not v-sync related stutter. I'm still messing around with settings, but every game is different which makes this even worse. I don't mind swapping settings around, but having a hotkey would be so nice.

[matrox-40]

Hello want to let you know I see similat behavior as you decribed, I see stutters in G-sync in iRacing in windowed mode, despite cap by RTSS to 116, monitor set to 120Hz, Dell G2724D. Frametimes measured by capframeX are almost ideal and I have a lot of GPU & CPU headroom. When I switch to fullscreen, its all butter smooth. Also note that VSYNC or scanline sync in windowed also stutter. Win10 22H2, tried different nVidia drivers, tried in fact enormous changes to the system and nothing helps for windowed mode. G-sync indicator is ON and also varying Hz I can see in monitor overlay, but windowed is just stuttering.

[WOWMelted]

I think I might be having the same issue. In certain games, is there a frametime spike every 3-4 seconds? Tarkov does this for me. I have somehow fixed this issue, but it will come back if I mess with any g sync, v sync, or reflex settings. I'm not sure what I did to fix it yet but if I can figure it out I'll let you know.