In my CFM, I'm running an option based offense with Dak Prescott. I decided I would save up XP one season to increase his speed. I noticed in week 3 that it cost just over 4000 XP to upgrade his speed. In week 5, I had enough, so I went to upgrade it, and now it costs over 9000! I looked at some of my other players, and they also have seen drastic increase in the price of some of their attributes.
What is going on? If it's in the same season, the players haven't aged, why did the cost of upgrading the ratings increase so much?