Do you want freesync but your monitor doesn't support it? > Scanline Sync

A universal alternative to freesync.

Presentation and frequently asked questions

Hello everyone, I want to share a good option to achieve something similar to freesync in any game or monitor.

I'm talking about the RTSS (Rivatuner Statistics Server) "Scanline Sync" option.

Official download website (RTSS)[www.guru3d.com]
Official download website (MSI Afterburner + RTSS)[www.msi.com]

I will not explain what he does or how he does it, it is complex, but I will leave some answers to possible questions.

Does this eliminate only tearing or also stutter like freesync and gsync do?

Correct tearing and eliminate stutter (if you have enough power).

Why do you say it corrects but does not eliminate?

Scanline Sync moves (with your help) the tearing to an invisible part of the vertical resolution of your monitor, it does not eliminate it.

What is needed to also eliminate stutter?

GPU usage must be less than / equal to 85/90% before activating scanline sync.

Does it work on any monitor or game?

It works on any monitor.

It works in any game that supports full screen (DX11, DX12, Vulkan, etc).

Does it work on any GPU?

It works on Intel, NVIDIA or AMD (APUs included).

Why are there two download links?

Scanline Sync works thanks to RTSS (and MSI AB is not necessary), but to verify that the process is working, MSI Afterburner is ideal.

Tutorial

Note: If you are only going to use RTSS, start at step 2.

1. Open MSI Afterburner and configure the OSD, if you never used it, just leave it as in the following images.





2. Open or go to RTSS (it should have been opened automatically if you use MSI AB).

3. Now you must add the executable of your game to RTSS for it:

Click the big green button that says "Add" and look for the ".exe".

Once the executable has been added, you must configure the option that says "Scanline sync". The value that goes here is different for each monitor and game, but it should always go negative, for example "-100" and never "100".

Note: If you only use RTSS you have to find a way to visualize the FPS within the game to verify that Scanline Sync is working.

Note: You must disable any form of VSYNC (vertical sync) before trying Scanline Sync.

Final step (testing) open the game with MSI AB open and press "INSERT" or the key you have chosen in step "1" to view the FPS.

If you have already assigned a value to Scanline Sync (following the table below) to know that it is working you must see if the FPS match the Hz of your monitor, for example 60 fps for 60 Hz.

FINAL CLARIFICATION: If you lack power in the GPU, Scanline Sync could be counterproductive, in that case you can activate the option "Scanline Sync x/2" by making two clicks on the text that says "Scanline Sync" in RTSS, this will reduce the FPS at half the Hz of your monitor for example 30 FPS for 60 Hz.

FINAL CLARIFICATION: If you have enough power in the GPU, you can double the FPS with respect to the Hz of your monitor by clicking on the text that says "Scanline Sync" in RTSS it should be "Scanline Sync x2" this is equivalent to 120 FPS for 60 Hz.

Some things...

I will leave some values for Scanline Sync as a guide, I will update them with new games when possible, you can also do your tests and leave a comment with the following structure:

Game: Counter-Strike: Global Offensive
Native monitor resolution: 1920x1080
Value: -110
Monitor Brand: Samsung

I will add your comments to the general table.

Values table for scanline sync

Game: Counter-Strike: Global Offensive
Native monitor resolution: 1920x1080
Value: -110
Monitor Brand: Samsung

Game: Valorant
Native monitor resolution: 1920x1080
Value: -140
Monitor Brand: Samsung

Juego: Killing Floor 2
Native monitor resolution: 1920x1080
Value: -110
Monitor Brand: Samsung