Nope, fps can go higher than the screen refresh rate. When it does it causes tearing as Gsync automatically disables which is very noticeable.
Always best to use Gsync with Vsync forced on in NCP, lock a few frames lower in NCP and leave FPS limit in game to unlimited (if there is one) and turn off vsync in game settings
G-SYNC Module The G-SYNC module is a small chip that replaces the display's standard internal scaler, and contains enough onboard memory to hold and process a single frame at a time. The module exploits the vertical blanking interval (the span between the previous and next frame scan) to...
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