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RTSS frame limiter delay measured
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Default RTSS frame limiter delay measured - 01-20-2017, 23:26 | posts: 11

A YouTube channel called Battle(non)sense, which is ran by a guy named Chris, measured the Button to Pixel (input lag) when using a G-Sync (or Free Sync) monitor in combination with the frame limiter feature of RTSS.

It's explained in this video:
where RTSS is looked at 3:52 in the video (but it is recommended to watch the full video).

It seems that the feature in RTSS is better implemented than the similar Nvidia Inspector feature named Frame Rate Limiter.
This basically means when a video game doesn't allow you to limit the frame rate in-game, you should set it in RTSS, as it will always have less delay than with V-Sync enabled.

I'm wondering as to how that was achieved, and if it would be possible to reduce the delay even further, similar to when the game itself allows frame limiting?
[Edit: it seems tests done in the G-Sync 101 post at blurbusters forum, show a way smaller delay introduced when using RTSS frame limiter.]


Last edited by n2k3; 01-22-2017 at 09:20.
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Default 03-20-2017, 11:34 | posts: 18 | Location: Argentina

I saw this using different limiters, in some games even a bad vsync implementation (like in Syndicate or Heroes & Generals) is fixed by using RTSS to a equal limit to the screen refresh (in addition to vsync)

But for people who play in fullscreen with no vsync and no gsync, using nvidia inspector and frame limiter v2 will give you no tearing and no input lag.

So RTSS has better timing, nvidia inspector has better sync to the monitor refresh, RTSS seems to be oblivious of the monitor refresh.

*you will see a bit of tearing if the fps drop, but is still better that adaptive vsync
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frame limiter, g-sync, rtss, v-sync

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