To prevent warping and awkward player movement. You can use normal if you want just make sure and still use 90 threshold. You're gonna notice when players make cuts on routes and jukes, it's gonna be quicker. It also makes the reaction time a little slower because the offense moves a little quicker . Use whatever you want. I specifically recommend certain things for a reason. To prevent bs plays and unrealistic things from happening as much as possible. But whatever makes the game fun for u.