They help cover up lag as the system catches up, but you don't really need slow settings on a fast device. (greenbot.com)
Also if you cook on slow setting for over 6 hours, say for soup / stock, the bones are so soft they literally melt in your mouth. (perfecthealthdiet.com)
(I'm right handed), but I recorded some gameplay of the Ajax TV Game, the first video is a game of Tennis on slow setting, and I was amazed at which hand came out victorious! (retro-video-gaming.com)