Hello
The rule is to have auto-positioning on slow. When we open character sheet manipulating this stats is not possible but there is a way to overpass that through warm-up (practice) menu. There (warm-up menu) is also a option to set/adjust auto-positioning and when it's done it stays in character sheet later.
I noticed this while messing around with fast movement and arcade controles and then went to play online. Arcade controles didn't matter because that decision depends on host but the movement stays no matter what. My opponent didn't notice anyhing strange.
Now, fast positiong sucks because safe zone but medium gives a nice advantage over slow one.
I don't know if this is a known issue and if it is and i get something wrong then sorry lol but if it's not then i think something should be done about this.
cheers