Some Mac computers have insanely high screen resolutions. You can chose to render aerofly at a lower resolution to decrease the load of your graphics card. This way it doesn't use as much power and is more fluid. 5k screens without a powerful graphics card require such a setting...
I have a high-end huawei android phone .. I have medium graphics and the game runs great .. My screen has a resolution of 1080x2340 ... How many pixels do you recommend having aerofly?