Doesn't matter which option you choose. Setting it to ON caps your framerate to your monitor's max refresh. Setting it to OFF uncaps it. Either way G-Sync will be on at framerates less than your monitor's max refresh.
Doesn't matter which option you choose. Setting it to ON caps your framerate to your monitor's max refresh. Setting it to OFF uncaps it. Either way G-Sync will be on at framerates less than your monitor's max refresh.
Vsync makes sure that the game doesn't try to push 152 fps to a 144hz monitor and caps the GPU output to maximum the panel can run.
Gsync makes the screen refresh rate slow down to the fps being output by your GPU (down to the rated min hz of the monitor) to eliminate tearing and skipping.