This video demonstrates the lag reduction and game speed changing features. See that number in the bottom left? Thats the frame rate. All of the speeds of moving objects in the game are divided by the frame rate, and multiplied by the game speed in the top right (at default, 50 - the frame rate cap). The result? Real-time speeds. Notice the number in the top right changes, I change it manually to determine the game speed. The higher the number, the faster the game runs. 0, puts the game at pause. Negative numbers make objects run backwards. Enjoy the video!
Watch when I switch quality modes, the frame rate changes, but the speed of the ship remains consistent.