what speed does everyone play at?

I play fastest because I consider myself clued up enough to handle it that fast, although sacrificing pure efficiency. My friend recently got the game and whenever we would play we would just play fast because he couldn't do fastest (no shame towards him I get it). To the people who play fast or slower idk what it's called, do you do it so you can better micro things? I rarely pause the game and when I do it is because there is a SHIT ton of stuff happening at once. How do you play?