I notice that when players get to a certain level their ability to earn skill points reduces and they earn them much slower. This happens even to expensive players at a certain point.

My entire team is mainly 18 year old expensive players and a few 19 year olds. They are mostly either 6 stars or nearly there. I notice that any players with 6 star gain skill points much slower then those below irrespective of value.

My question is, when I get promoted and my expensive six star players are expensive 5 star players ( I know they will still be expensive players at a higher level from scouting leaders of the league above me) will they start earning skill points again at a higher rate, like they used to as level 5 on the current level?