Mac computers have long switched to high resolution displays. The Retina display is so high pixel density that the human eye cannot distinguish between individual pixels at a normal distance from the screen. This ensures the highest image detail, and improves the quality of the view as a whole. At the same time in demanding games, this affects graphics performance.
The performance is simple: if you open the game in the native resolution, the OS scales it up to 2880 x 1440 or higher. The obvious way in this case — go to the settings of the game and change the resolution. But there is a simple solution that won’t require even launch the game.
How to improve the performance of games on Mac:
Some games and programs check box “Open in low resolution” is already installed. Are programs that function better in this mode or in General can work only in it.