Enabling G-sync has hidden impacts even when frame rate is uncapped?

Everything about latency. This section is mainly user/consumer discussion. (Peer-reviewed scientific discussion should go in Laboratory section). Tips, mouse lag, display lag, game engine lag, network lag, whole input lag chain, VSYNC OFF vs VSYNC ON, and more! Input Lag Articles on Blur Busters.
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kurtextrem
Posts: 41
Joined: 05 Mar 2017, 03:35
Location: Munich, Germany

Re: Enabling G-sync has hidden impacts even when frame rate is uncapped?

Post by kurtextrem » 18 Dec 2020, 05:06

I also would love to see BattleNonSense re-test that specific part of the video. If I remember correctly he back then assumed it was a driver issue, but who knows if Nvidia cared to fix it?
Acer XF250Q, R6 competitive player

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Mach
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Joined: 02 Nov 2025, 14:33

Re: Enabling G-sync has hidden impacts even when frame rate is uncapped?

Post by Mach » 03 Nov 2025, 13:25

You aren't wrong or crazy. I was having this issue with my AW2723DF and made a post about it: viewtopic.php?t=15080

Now I see your post and it's the same issue I've been having.

G-Sync/VRR is not active, yet having it "on" but disabled still affects the input latency when it "shouldn't." At this point, I believe it is a driver issue and should be tested/taken seriously. Your thread seems to have gotten derailed a bit but your post helped me. In my case, I disabled G-Sync because my frames are above the refresh rate anyway for a long time. After a GPU driver reinstall, I left the settings at default for once. This left all of my games at the "G-Sync Compatible" Monitor Technology setting under Manage 3D Settings instead of the usual "Fixed Refresh" setting I used before.

I ended up enabling G-sync under the Set up G-SYNC tab, which would solve the input latency, then I'd disable the setting and the low input lag would stay. Something is definitely wrong with the G-Sync implementation on these monitors and no one has tested them for this issue because it shouldn't be happening at all.

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