The ideal time to make the transition is when you have at least 3 max-covered 5-stars and enough ISO to level them up all at once, along with almost all the 4-stars champed.If you start leveling your 5-stars now you are going to do what you are afraid of doing.Hold off.
Hey all, I have about twenty champed 4*s, and three 5*s that have 9/10 covers each. I read on here a while back that leveling up your 5*s this early really screws up your MMR scaling. Is this still true? When is a good time to level up the 5*s?