Do u like a fast haircut or a slow one?

I'm a hairdresser and my last business told me to cut faster so I learned im very good at what I do I do it fast and a good job never any complaints My current boss is telling me i'm way to fast and I need to slow down, but it is hard for me to do after being so fast. I cut mens hair in 10 to15 mins and womens in about a half hour with style and wash foil about 2 hours with a cut. My question she wants me to take 30 mins for men and 45 for women and 2.5 hours for foil and cut, wandering what u people really prefer, she says u like it slow for the experience I would think u want to get in and out???? Thanks for the help