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post #2891 of 5321
Quote:
Originally Posted by PowerK View Post

I have a question regarding a correct G Sync setup. I searched internet on the correct usage of V Sync with G Sync and it seems to me that every person says a different thing.

Before I ask a question, I'd like to state two things based on my understanding. Please do correct me if I'm mistaken.
1. You only get 1/2 of frame rate *if* rendered frame rate cannot keep up with monitor's refresh rate. Eg. 144 -> 72 -> 36 -> 18
2. G Sync is inclusive of V Sync.

Based on the above points, I've been using G Sync set up as follows:
- In-game V Sync option = disabled.
- NVCP V Sync option = disabled.
- NVCP G Sync option = enabled.
- Frame rate limit to 144 FPS. (via RivaTunner or nVIDIA Inspector)

However, searching the internet, there also are many people who claim that V Sync in NVCP needs to be enabled for G Sync to work correctly. confused.gif
Hence, suggested settings from those people seems to be:
- In-game V Sync = disabled.
- NVCP G Sync = enabled.
- NVCP V Sync = enabled.
In this case, I guess there's no need to set frame rate limiter.

Can anyone shed light on the correct G Sync setup ??

With that being said, there are exception for games like CS:GO where I can maintain constant 128 FPS almost all the time. (CS:GO's maximum tickrate supported is 128Hz) In these cases, I opt for ULMB rather than G Sync.
For games like this, I've been using the following settings:
- In-game V Sync option = disabled.
- NVCP V Sync option = disabled.
- NVCP G Sync option = disabled.
- NVCP ULMB option = enabled.
- Frame rate limit to 128 FPS. (fps_max 128 cvar)

When using gsync, this is the correct setup in order to get no input lag or tearing:

Ingame vsync = off
NVCP vsync = off
NVCP gsync = on
FPS limit: 140 (I'd recommend something accurate like Rivatuner as opposed to using an ingame option or something)

Gsync turns off as soon as you hit 144/145 fps and either:
a. Vsync turns on if enabled, thus introducing input lag.
b. Tearing occurs if vsync is disabled.

Capping at 135-140 allows room for random fluctuations and you'll never have to deal with either. Blurbusters did some gsync input lag tests in CSGO and showed that while capped at 143, there was still massive amounts of input lag. Now - they were using the ingame max fps command for that, so maybe it's not super accurate or something and was actually fluctuating to 144/145. Their tests with a cap of 135 showed no input lag whatsoever.
post #2892 of 5321
Quote:
Originally Posted by Ickz View Post

When using gsync, this is the correct setup in order to get no input lag or tearing:

Ingame vsync = off
NVCP vsync = off
NVCP gsync = on
FPS limit: 140 (I'd recommend something accurate like Rivatuner as opposed to using an ingame option or something)

Gsync turns off as soon as you hit 144/145 fps and either:
a. Vsync turns on if enabled, thus introducing input lag.
b. Tearing occurs if vsync is disabled.

Capping at 135-140 allows room for random fluctuations and you'll never have to deal with either. Blurbusters did some gsync input lag tests in CSGO and showed that while capped at 143, there was still massive amounts of input lag. Now - they were using the ingame max fps command for that, so maybe it's not super accurate or something and was actually fluctuating to 144/145. Their tests with a cap of 135 showed no input lag whatsoever.
Thanks for the informative post, Ickz.
I've just learned that nVIDIA updated G-Sync in May 2015
http://www.geforce.com/whats-new/articles/g-sync-gets-even-better

According to the article,
Before the G-Sync update:
When G-Sync is enabled in NVCP, V-Sync was automatically enabled. Hence, input lag. The Blurbusters article you mentioned (which I think is this one) was written in January 2014 which was way before nVIDIA made an update to G-Sync.

After the G-Sync update in May 2015:
nVIDIA gave us an option to enable/disable V-Sync when G-Sync is enabled.

I now have a clearer understanding of correct G-Sync setup. Thank you. smile.gif
Edited by PowerK - 8/24/16 at 12:06am
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post #2893 of 5321
Yeah, that's why they were getting lag with a cap of 143. If they redid the test now with vsync off, I would assume there would be zero lag - but possible random tearing. I would still recommend capping at 140.
post #2894 of 5321
Indeed. It definitely looks like G-Sync (NVCP) enabled with V-Sync (in-game & NVCP) disabled *with* frame rate limiter to around 140 is the best way.
And as per nVIDIA's article, using ULMB (rather than G-Sync) for games like CS:GO (and I guess Overwatch as well) is a good option as well.
Quote:
Originally Posted by nVIDIA 
Some G-SYNC monitors also include a NVIDIA Ultra Low Motion Blur (ULMB) display mode, which strobes the backlight of the monitor to eliminate motion blur and further reduce input latency. The quality of ULMB is tied to a player’s frame rate, however, meaning a high, consistent frame rate of 120 to 144 frames per second is required to avoid distracting and unsightly flickering.

In the new Game Ready driver, you can now select on a per-game basis whether to use G-SYNC or ULMB, if your monitor supports it. This allows for seamless switching between display modes, enabling players of Counter-Strike to use ULMB, before switching to G-SYNC for The Witcher 3, without any additional user input or use of the monitor's OSD.
Source : http://www.geforce.com/whats-new/articles/g-sync-gets-even-better
Edited by PowerK - 8/24/16 at 12:11am
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post #2895 of 5321
With my Sig rig would setting a 140 cap work with Evga px software? Games I play is Ark, killing floor 2 devil may cry 4, primal, GTA 5,Doom,
post #2896 of 5321
Hey guys,

This may sound strange, but for some reason, ever since upgrading to this monitor and using display port, my GPU clock seems stuck at 1506mHZ (GTX 1070). Even on idle it sits at that temp which makes me uncomfortable because it raises my system temps for no good reason. It used to scale back down to like 300mHZ when nothing was happening. Can somebody please help me understand whatever is going on!
post #2897 of 5321
Quote:
Originally Posted by dminzi View Post

Hey guys,

This may sound strange, but for some reason, ever since upgrading to this monitor and using display port, my GPU clock seems stuck at 1506mHZ (GTX 1070). Even on idle it sits at that temp which makes me uncomfortable because it raises my system temps for no good reason. It used to scale back down to like 300mHZ when nothing was happening. Can somebody please help me understand whatever is going on!

It's because your monitor is set to 144hz which activates 3d clocks on your gfx card. If i remember correctly 120hz is the limit before 3d clocks kick in. So you can lower the monitor to 120hz in desktop mode. If you are uncomfitable with your gfx speeding up to 3d clocks. But how much is your temp rising? i did not notice anything different.
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post #2898 of 5321
Quote:
Originally Posted by AlCapwn View Post

It's because your monitor is set to 144hz which activates 3d clocks on your gfx card. If i remember correctly 120hz is the limit before 3d clocks kick in. So you can lower the monitor to 120hz in desktop mode. If you are uncomfitable with your gfx speeding up to 3d clocks. But how much is your temp rising? i did not notice anything different.
Well before this my idle temps would sit at 34c and now they range from 44-50c which seems a bit too high to me... It seems silly that GPU Boost just turns off once you hit a certain resolution...
post #2899 of 5321
Quote:
Originally Posted by dminzi View Post

Well before this my idle temps would sit at 34c and now they range from 44-50c which seems a bit too high to me... It seems silly that GPU Boost just turns off once you hit a certain resolution...

Well it's the refresh rate that does it not the resolution smile.gif i don't know if there is another way to go back to 2d clocks other than bumb refresh rate to 120hz at desktop thumbsdownsmileyanim.gif. which is kind of a pain to do each time you have finished a game.
I don't have this problem anymore as i only run 120hz ULMB.
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post #2900 of 5321
Quote:
Originally Posted by PowerK View Post

Indeed. It definitely looks like G-Sync (NVCP) enabled with V-Sync (in-game & NVCP) disabled *with* frame rate limiter to around 140 is the best way.
And as per nVIDIA's article, using ULMB (rather than G-Sync) for games like CS:GO (and I guess Overwatch as well) is a good option as well.
Source : http://www.geforce.com/whats-new/articles/g-sync-gets-even-better

Good info, thanks for this! I'll have to try this when I get home. I have just been playing CS with Gsync on and uncapped fps but I never come anywhere near being below 144 fps so gsync is kinda useless. I'l try capping the fps and turning on ulmb. And I actually don't have any experience with limiting fps, but I saw something mentioned above, Rivatuner. Is this just an application that would be able to set the fps for specific games?
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