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V-sync at 144hz

tintin82

tintin82

tintin82

Associate
Joined
27 Aug 2009
Posts
712
Hi Folk,

I have just taken delivery of an excellent Dell s2716dg.

A couple of questions regarding the G / V-sync as all I ever did was leave it on so the FPS was limited to 60 on my old screen.

So currently I have fast sync and G-sync on, however I notice that the FPS runs away above 200 in games such as rocket league. I am keen to avoid this as its just pointless and pumps out necessary heat / noise. When I enable vsync it locks at 144 which is great. But my concern is that the lag that was present using my old screen at 60hz will be present.

So is the vsync lag at 60hz the same as 144hz?

How do you guys with 144hz screens and a powerful GPU tend to have your settings?

Also, in the NCP G-sync there is a option for enabling G-Sync in Full screen, or windowed and Full screen. Why? Why would you not want the later option all the time?

Any tips on setting this up to the optimal setting appreciated.

Thanks
 
String said:
It's a 1440 monitor so I wouldn't think the extra complication with RivaTuner would be necessary.
Click to expand...

You have to cap lower than refresh to avoid vsync or fast sync, even with lower end gpus for less graphically intensive games that go above 144fps. There's no other way round it as far as I'm aware.
 

Thought you might find this interesting, relevant parts start at 7:10, and there's also an example of fast sync causing microstutter at 12:10.
 
I have G-Sync and V-Sync enabled in NCP.

Framerate caps at 144Hz. I don't play windowed games, so I don't know if these settings work or not.
 
tintin82 said:
Also, in the NCP G-sync there is a option for enabling G-Sync in Full screen, or windowed and Full screen. Why? Why would you not want the later option all the time?
Click to expand...

Compatibility - Windows wasn't designed with variable refresh in mind and in windowed modes is a bit of a hack though it seems to mostly work ok now.
 
I don't understand, why don't nvidia just cap fps to something just below 144hz? Surely if people are doing this by themselves using rivatuner and think it is better than vsync engaging, it would take little to no effort for nvidia to do this anyway. :confused:
 
I imagine Nvida think most people won't notice the input lag at 144Hz so don't see the merit. Given that I see many people on forums report they don't notice it even at 60Hz Vsync I can't say I blame them :p
 
titaniumx3 said:
I don't understand, why don't nvidia just cap fps to something just below 144hz? Surely if people are doing this by themselves using rivatuner and think it is better than vsync engaging, it would take little to no effort for nvidia to do this anyway. :confused:
Click to expand...

Its quite a varied story as well - some games hitting 144Hz/FPS doesn't really induce extra lag while others capping the framerate to around 135 for some reason massively reduces input latency.

There is a slight down side though - due to rounding, etc. and depending how the framerate cap is implemented if you are capping just below 144 FPS you can get some frames generated more quickly over a portion of the period used to calculate the framerate cap which will exhibit tearing very briefly for those frames.
 
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