Possible solution: I can't say for sure if this will work in OOTP 25, but I recall several versions ago that the solution for this situation is to play with Development ON, but set Talent Change Randomness to 1. As far as how players develop, this is basically like playing with Development OFF, but with Development ON and TCR set to any level, players will then age realistically... Again, this is based on testing a few years back. Certainly worth testing out now
