so, with every skin, u will use a diffrent scroll speed. like boji's skin: i use 26 or 27. but jkzu's Quadraphinix skin: 31-32. changing scroll speed sometimes can affect your ability to read the notes, i mostly use jkzu with 31, but if theres chordjacks i mostly go with 32 so i can understand the bpm/speed of the level and see the space between notes,
and no changing scroll speeds is not bad