Is Linux Mint slow? Hell, no! The operating system is plenty fast. Speed is in the eye of the behold, however, and the Mint developers apparently thought app-launching seemed slow when using the Cinnamon desktop environment. They didn't have any proof, but they felt that both Mate and Xfce were faster in this regard. Well, rather than allow their feelings to remain unproven, the Mint devs decided to come up with a speed test to see if they were correct.