G-Sync Question

[dcf-joe]

I am just trying to have my logic verified.

I have a 165 Hz, G-Sync capable monitor. I play a variety of games, so naturally I will have games that are displayed at over 165 fps and games that are displayed well under 165 fps. Using the two examples below, am I doing this right?

CS:GO
My computer is more than capable of playing this game at a constant > 165 fps. Because of this, I have disabled G-Sync, disabled in-game Vsync, and disabled the nVidia control panel Vsync. I have however used the console command "fps_max 162" to have the game engine limit me to slightly under my monitor's refresh rate. The game plays at a constant 159 to 162 fps using this method.

Doom (2016)
My computer is only able to play this game at 90 to 130 fps, and will hardly ever get up to 165 fps. Because of this, I have enabled G-Sync, but have disabled in-game Vsync, and disabled the nVidia control panel Vsync. I am unaware of any options in this game to limit fps or set a monitor refresh rate, but I don't see how that would be necessary since I am not approaching the fps that will exceed my monitor's refresh rate.

 

[Sasqui]

My computer is more than capable of playing this game at a constant > 165 fps. Because of this, I have disabled G-Sync, disabled in-game Vsync, and disabled the nVidia control panel Vsync. I have however used the console command "fps_max 162" to have the game engine limit me to slightly under my monitor's refresh rate. The game plays at a constant 159 to 162 fps using this method.

Why disable G-Sync in this scenario?

I guess in both, if you don't notice any screen tearing and are getting high frame rates, you've accomplished what G-Sync (and V-Sync) was designed for.

Does the monitor support both V-Sync and G-Sync? In looking at a few G-Sync monitors, I don't recall seeing any that did both (another shady ploy by NVidia, it seems), but I could be wrong.

 

[phanbuey]

the framepacing is another benefit of gsync... while it does induce a bit of latency, part of the reason that movies at 24 - 30 fps feel smooth (apart from interlacing) is that the frametimes are so consistent -

 

[dcf-joe]

Here is why I disabled G-Sync for the CS:GO scenario.

From my understanding, to me, G-Sync is really only for if your framerates fluctuate a decent range, below your monitor's refresh rate. In my case, I am limiting my framerate for 3 below what my max refresh rate is. It stays consistent at this limit, 99% of the time. There will hardly ever be any fluctuation. I guess I am confused as to what G-Sync is doing for me in this scenario.

 

[R00kie]

Gsync helps with tearing immensely, and from what I remember CS:GO does that a lot, especially if your card can pump out loads of frames. Its better if you turn on GSync when youre playing CS but turn off VSync and keep the framerate about 3-4 notches lower than your refresh rate.

 

[P4-630]

Try CS:GO with G-Sync and Fast Sync on.

 

[R00kie]

Try CS:GO with G-Sync and Fast Sync on.

Fast Sync makes G sync irrelevant and introduces incorrect frame pacing when paired with gsync. Its either gsync+vsync, or Gsync+framecap.

 

[dcf-joe]

Alright guys. I will try out Gsync + framecap in CS:GO.

 

[qubit]

Alright guys. I will try out Gsync + framecap in CS:GO.

Forget the framecapping, but gsync is good.

I am just trying to have my logic verified.

I have a 165 Hz, G-Sync capable monitor. I play a variety of games, so naturally I will have games that are displayed at over 165 fps and games that are displayed well under 165 fps. Using the two examples below, am I doing this right?

CS:GO
My computer is more than capable of playing this game at a constant > 165 fps. Because of this, I have disabled G-Sync, disabled in-game Vsync, and disabled the nVidia control panel Vsync. I have however used the console command "fps_max 162" to have the game engine limit me to slightly under my monitor's refresh rate. The game plays at a constant 159 to 162 fps using this method.

Framecapping is bad and pointless since it's not synced to the monitor's refresh, so you're getting stutters and lag all the time. At 162Hz the stutters are pretty small though, but that doesn't make it ok.

Since your GPU consistently renders above 165fps, then you're much better off using one of two options:

1 Switch on gsync. The game will then run at a vsync locked 165fps for super smooth animation where the GPU can go faster than 165fps, with just a little less lag than at that framecapped 162fps. If the framerate occasionally drops below 165fps, then gsync will take care of it to keep the action smooth.

2 Switch on FastSync. It's not possible to do at the same time as gsync as it's selected from the same dropdown menu, but it has the advantages of super smooth animation with the low lag of vsync off. There are instances where it actually introduces stutters in some games, so only use it on a per game basis if it looks ok.

Doom (2016)

My computer is only able to play this game at 90 to 130 fps, and will hardly ever get up to 165 fps. Because of this, I have enabled G-Sync, but have disabled in-game Vsync, and disabled the nVidia control panel Vsync. I am unaware of any options in this game to limit fps or set a monitor refresh rate, but I don't see how that would be necessary since I am not approaching the fps that will exceed my monitor's refresh rate.

Yup, all you need for this is gsync as it's exactly the situation it was made for. It overrides normal vsync by definition and is selected from the same dropdown menu as vsync anyway so you can't choose both at once by accident.

 

[Slizzo]

With VSYNC off and G-Sync on, your framerate will be allowed to exceed the max refresh of the monitor (165FPS) and you WILL see tearing in game UNLESS you either :

1. Cap frames at around 3 below main refresh at 162FPS (you can easily use Riva Tuner Statistics Server to do this, I do)
2. Enable Fast Sync to allow the driver to duplicate frames and drop others. You will induce some lag with this, but that's up to you which experience is better for you.

This is how I run, since I don't care if I am seeing 2 billion frames per second:

VSYNC OFF in games AND NVCPL. G-Sync ON. Limit framerate to 141 in RivaTuner Statistics Server.( I have a 144Hz max refresh G-Sync panel)

Serves me well.

 

[P4-630]

Enable Fast Sync to allow the driver to duplicate frames and drop others.

Ok Fast sync with G-Sync off then.
@gdallsk

 

[Slizzo]

Ok Fast sync with G-Sync off then.
@gdallsk

No, if you want to run it that way, just leave G-Sync on, and turn your V-Sync in the panel to Fast Sync.

 

[Beastie]

Gsync works pretty good on its own in most scenarios, it eliminates screen tearing and ties your monitor to your GPU's output.

Lag is not a problem at all for me but this may depend on your hardware and games.

 

[Vya Domus]

Just leave G-sync on for Christ sake. That's what is meant for , so that you never have to worry about tearing of framepacing. At 165hz I doubt you will be limited by anything other that your skill in competitive games.