By the way, it does not matter to enliven without Vsync.
Turn off Vsync is quite expensive but it helps to reduce cut off the screen amount. Using the Mac laptop to play the game better start from low quality then increase to medium and next. The laptop must have the resolution in 1080p that close to 60 FPS or above 30. Next, you should know some important setting consisting of the resolution, preset quality, and Vsync.