http://www.blurbusters.com/gsync/gsync101/
TL:DR
Optimal G-SYNC Settings
Nvidia Control Panel Settings:
Set up G-SYNC > Enable G-SYNC > Enable G-SYNC for full screen mode.
Manage 3D settings > Vertical sync > On.
In-game Settings:
Use “Fullscreen” or “Exclusive Fullscreen” mode (some games do not offer this option, or label borderless windowed as fullscreen).
Disable all available “Vertical Sync,” “V-SYNC” and “Triple Buffering” options.
If an in-game or config file FPS limiter is available, and framerate exceeds refresh rate:
Set 3 FPS limit below display’s maximum refresh rate (57 FPS @60Hz, 97 FPS @100Hz, 117 FPS @120Hz, 141 FPS @144Hz, etc).
RTSS Settings:
If an in-game or config file FPS limiter is not available and framerate exceeds refresh rate:
Set 3 FPS limit below display’s maximum refresh rate (see G-SYNC 101: External FPS Limiters HOWTO).
