How do I use the Benchmarking tool?
The Benchmarking test (accessed via the Benchmark option in the Options menu) helps you determine Batman: Arkham City Game of the Year Edition's performance on your Mac under the game's current graphics settings.
The numbers displayed in the top-left corner of the screen during the Benchmarking test represent the Minimum, Maximum and Average FPS (frames per second) that the game will run at. The higher the FPS, the better the game's performance.
To increase the FPS, adjust your graphical options via the Video tab in the pre-game Options window. To learn more about improving Batman: Arkham City Game of the Year Edition's performance, please refer to the Performance Tips point in the ReadMe.