Input lag with always > 60 FPS

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daspal

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Oct 25, 2016
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1. If my fps is always greater than 60 FPS then will i have any input lag with v-sync?
I have a 60Hz FHD display and Planning to buy a GTX 1070 which can play some of my older games at 250-300 FPS, will this create high input lag with v-sync?

2. And if it is there how noticeable will this input lag be if my fps is like 120?

3. One more thing, if i disable v-sync, will i have any input lag?
 
Solution
James Mason
V-sync can cause input lag yes.
Disable v-sync removes input lag it may cause, but you may experience screen tearing, though typically only if you have a bad monitor.
If you just want to limit your framerates so your GPU doesn't have to work too hard, you can do that with Rivatuner Statistics Server (it has a "framerate limit" option on the right hand side)
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James Mason

James Mason

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Jan 2, 2014
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V-sync can cause input lag yes.
Disable v-sync removes input lag it may cause, but you may experience screen tearing, though typically only if you have a bad monitor.
If you just want to limit your framerates so your GPU doesn't have to work too hard, you can do that with Rivatuner Statistics Server (it has a "framerate limit" option on the right hand side)
 
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Solution
amtseung

amtseung

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Jan 28, 2014
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Often times, especially in DX9 and DX10 titles, you can go into the game installation folder and find an ini or xml file with all the real settings in it, and you can manually set an fps cap there without having to go third party or use vsync. Often times, in these config files, there are hundreds more settings you can change, edit, and experiment with than what you see in the in-game menu. Fiddle and twiddle at your own risk, of course.

For example, in Planetside 2, the file is called Useroptions.ini, and there is a line that says MaximumFPS=60, and you can change that 60 to whatever you want, under 999. For some reason, the game won't launch if I put 1000 there.
 
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daspal

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Oct 25, 2016
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How is tearing related to bad monitor?
 
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amtseung

amtseung

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Hmm, no one bothered to answer a perfectly good question.

Look up monitor response time. As you watch an image on your screen, a combination of refresh time and response time dictate how smooth your viewing experience is. Bad monitors tend to have rather long and uneven response times, meaning as it's time for the image to change and the pixels to refresh to display the next frame, they take a while to do so, ending up in tearing, ghosting, and sickening unintentional motion blur. You can certainly get tearing on a really good monitor, it's usually less noticeable though.
 
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