The impression is from playing cav, where it has incredible turning power even at top speed. You can take right angled corners without needing to slow down. It may be less manoeuvrable, but the decrease is very slight, and should be significantly more. It would nerf cav, raise the skill ceiling, make the game closer to Warband, and make the cav movement much more natural looking.This isn't correct, at top speeds maneuverability is noticeably decreased, while being better at lower speeds. It's hard to say where you got this impression from.
This is because movement speed is high on foot and cav deceleration is extremely low along with little marked difference to turning (e.g. you can't slightly reduce speed and gain manoeuvrability to punish someone dodging too early).ye from my experience at full speed everything can dodge you if the player sees you coming so why decrease it lol