G-SYNC 101: Hidden Benefits of High Refresh Rate G-SYNC


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Often overlooked is G-SYNC’s ability to adjust the refresh rate to lower fixed framerates. This can be particularly useful for games hard-locked to 60 FPS, and has potential in emulators to replicate unique signals such as the 60.1Hz of NES games, which would otherwise be impossible to reproduce. And due to the scanout speed increase at 100Hz+ refresh rates, an input lag reduction can be had as well…

Blur Buster's G-SYNC 101: Input Lag & Optimal Settings

The results show a considerable input lag reduction on a 144Hz G-SYNC display @60 FPS vs. a 60Hz G-SYNC display @58 FPS with first on-screen reactions measured (middle screen would show about half this reduction). And while each frame is still rendered in 16.6ms, and delivered in intervals of 60 per second on the higher refresh rate display, they are scanned in at a much faster 6.9ms per.



3486 Comments For “G-SYNC 101”

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pacoporrr
Member
pacoporrr

One question, in Windows 11 should we set “Dynamic refresh rate” to “on” (inside ‘System > Display > Advanced display’)?

And also under ‘System > Display > Graphics” the option “Variable refresh rate” should be set to “on”?

Thanks 🙂 nice guide!!

ati
Member
ati

Hello Jorimt,

So I have read through a lot of articles covering this topic. What I am still trying to understand is the following.

Do I achieve lower latency with:

G-Sync + Frame cap in Nvidia Control Panel set manually to 138fps without V-sync (Ultra Low Latency enabled aswell)

or

G-Sync + V-sync and using the Ultra Low Latency mode which automatically caps the FPS in game to 138fps with a 144hz monitor.

Does any of these methods result in lower latency, or are they basically the same. Both seemingly get the job done, but I wonder does using the variant with V-sync maybe cause more lag? Or does the ULL mode which caps it at 138fps basically work like a normal Frame cap mitigating the lag disadvantage of V-sync?

I hope you’re able to follow my questions here. I appreciate your help!

dandyjr
Member
dandyjr

Hey, Jorimt! I hope all is well. I’m writing today because I have a MSI MPG 271QRX QD-OLED monitor on the way and I am curious if you have any experience with using VRR with OLED panels. I am very well aware of the dreaded VRR flicker that everyone talks about but I’m wondering if it’s even worth trying to use VRR with a 360Hz OLED because I know you’ve stated before that the higher the refresh rate, the less necessary VRR becomes. My thought process is that the tearing wouldn’t be noticeable at that refresh rate, but the flickering definitely would be. Have you been able to test VRR on OLED panels and do you think it would be best to just leave VRR disabled on a 360Hz OLED monitor? Thank you so much in advance and thank you for all that you’ve done for the gaming community!

cruxxf
Member
cruxxf

i wonder how the new RTSS reflex mode compares to a manual in-game FPS cap on games that do not support reflex

Treeplex
Member
Treeplex

Hello, I have a BenQ Zowie XL2566K monitor, I play story games and was wondering if I should enable Adaptive-Sync and if I did the right thing by disabling AMA to achieve a cinematic picture?

As for the G-Sync settings in the NVIDIA Control Panel, is it worth setting a frame limiter if my system isn’t even close to achieving 360fps? And which NVIDIA Reflex mode is better to use: “Enabled” or “Boost”?

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