If you own a retina Mac, you've probably noticed that using the highest resolution isn’t always a good idea when playing a game. It slows down the screen and can feel like you're playing a laggy, choppy game.
Reducing the quality of the graphics might solve the problem. But if you still feel like your game isn’t running as it should, there’s another solution to make your games run more smoothly on your retina Mac.
The first thing we need to do is find the game’s application – that's actually pretty easy. Launch Finder and find the game, it’s usually in the Applications folder. However, if the game you are playing is from Steam, then you need to select the game in your Steam’s library, right click and choose “Properties”. Then click “Local files” and “Browse Local Files”.
Now that you have the game application open in Finder, right click and click “Get info”. You should be able to see a checkbox that says “Open in Low Resolution”, check this box. This will make this game launch in low resolution every time you play it, which should improve its performance significantly.
Launch your game and see if the FPS (Frames Per Second) have increased at least a little bit. The game should feel smoother. Of course, the graphics won’t look as nice as if you were running it in the highest quality possible, but at least the gameplay will feel a lot better.