evilhf wrote:is there any setting in Scanline sync that I can play with the fps unlocked (above 144hz) without tearing the screen?
Nope.
However, if you don't mind locking framerate at DOUBLE the Hz, and you have the GPU headroom:
Alternative low-lag stutter-free tearing-free trick for STABLE double framerate
However, there's a compromise available: Combining scanline sync with NVIDIA Fast Sync / AMD Enhanced Sync. You can sync to twice the framerate of your Hz, for what can result in lower-lag mechanics in certain games.
To do this is somewhat fiddly.
1. First, turn VSYNC OFF.
2. Sync to a scanline slightly above middle of screen and right above bottom edge of screen.
3. Adjust until the bottommost VSYNC OFF tearline never, ever falls below bottom edge of screen.
4. Now enable NVIDIA Fast Sync or AMD Enhanced Sync.
5. The tearlines will disappear, but you're now getting smooth game motion (if your framerate permanently keeps up at exactly double Hz).
Step number 3 is super important because if tearline jitters very often touching the bottom edge of screen, you will get stutters when enabling AMD Enhanced Sync / NVIDIA Fast Sync. So calibrate with VSYNC OFF first, to make sure you have two permanently-visible stationary tearlines (first tearline roughly ~5-10% screenheight above middle of screen for SyncScanline0 setting, and second tearline roughly ~5-10% screenheight above bottom edge of screen for SyncScanline1 setting) before turning on NVIDIA Fast Sync or AMD Enhanced Sync. The tearline are your visual calibration targets before making them disappear. Tearline position pre-calibration is necessary in order to get stutter-free tear-free double-framerate with scanline sync.
In addition, your game cannot use 100% GPU during double-framerate operation. This is only stable if your GPU is nearly always only partially utilized even at double framerate. This tweak is MUCH more finicky than simple framerate-matching-Hz scanline sync.
Alternative trick for low-lag tearing-free
Since you're playing Quake Champions which can run at very high frame rates, try disabling RTSS, uncapping your Quake framerate and then using NVIDIA Fast Sync or AMD Enhanced Sync. Your sheer high framerate will render invisible most harmonic/beat frequencies (aka stutter) between framerate-versus-refreshrate. And the low-lag triple buffered mode of Fast Sync or Enhanced Sync will guarantee that the freshest rendered frame is the one that gets scanned out to the monitor.
Some games (not all) may malfunction in aiming at uncapped framerates, but give this a try, and compare the aimfeel. In both situations you may have slightly more lag than any tearing mode, unless the tearing/microstutters are wrecking your aim (and need the tweaks here on Blur Busters). The right tool for the right job, I say. Give these tweaks a try and figure out what makes your aiming faster and more precise.
