What is Riva Tuner Statistics Server
RivaTuner Statistics Server (RTSS) is a tool that helps you see how well your computer is performing while you play games. It shows important information like framerate (FPS) and frametime, which helps gamers improve their experience by understanding how their system is working. RTSS also has features for limiting framerate, taking screenshots and recording videos, and customizing settings, making it a useful tool for gamers.
What is Scanline Sync
Scanline Sync is a software solution that helps reduce screen tearing in games while causing less input lag than regular Vsync. It also helps smooth out stutters on monitors that don’t have variable refresh rates, as long as your graphics card can keep the frame rates above the monitor's refresh rate.
In simple terms, it’s an alternative to Nvidia's G-Sync and AMD's FreeSync, but unlike those technologies, Scanline Sync works without needing special monitors that adjust their refresh rates to match changing frame rates.
Read more about Scanline Sync: resetera.com
How to reduce screen tearing with Scanline Sync
What I am going to guide you here is just the quick setup. If you want more in-depth configuration, refer to the link above or here:
https://forums.blurbusters.com/viewtopic.php?t=4916
Download and install RTSS:
https://www.guru3d.com/download/rtss-rivatuner-statistics-server-download/
After install, launch RTSS and add your game by clicking the Add green button at the bottom of RTSS window.
Make sure all these settings in the picture below are enabled. They can be turned off after finishing setting up scanline sync.
At the top of RTSS app, toggle the Show On-screen Display to ON. Then go to Setup at the bottom and check Enable Frame Color Indicator box.
If you notice the settings on the right part of RTSS are greyed out, press the pink Reset button. We will need to input some numbers there later.
Launch your game. You will see a color bar at the left side of the screen.
Insert a NEGATIVE number into the Scanline Sync box. Start with something like -30 and look at the color bar. You will notice a tearline stuck in a position. Refer to the picture below.
What you need to do here is move the tearline (left picture) towards the top of the screen by increasing or decreasing the value of Scanline sync (right picture). You might need to alt-tab several time to monitor the tearline position.
If you are seeing something else like Scanline sync 2x or Scanline sync x/2, click on it to change back to Scanline sync.
Why to the top? I don't remember where I read it, if I recall it correctly, moving the tearline near the top provides better input lag compared to positioning it near the bottom. I think this post explains it.