The issue of velocity decline that occurred after the August patch was not fully fixed despite the September and October patches.
The problem is that high-speed (97+) pitchers tend to lose speed in their 20s too often, and the degree to which they lose is also too much. So the overall aging curve becomes unrealistic. Below are data about 97+mph pitcher's aging from the OOTP Standard League, simulated for 20 years with injury setting off, and 2010-24 MLB. (Fictional leagues did not take into account.)
In this way, I compared 127 OOTP pitchers and 42 MLB pitchers. (Please ignore bad image quality)
The aging curve is not mean speed by age, but truncated mean of change between ages.
The targets are pitchers who have played in big league for more than four seasons and whose speed is 97+ mph. Both OOTP and MLB are same that speed is the best at age of 25 and 26, but unlike the reality that speed gradually declines until 30, in OOTP speed drastically decrease from age 27, and lose more than a mile at the 28, which is three years faster than the reality.
It is also abnormal to look at the ratio of 97+ pitchers whose speeds decreased by 2, 3 miles or more in the same situation. In OOTP, 90 percent of pitchers lose more than 2 miles before the age of 30. Please note that there is no injury in OOTP. (*The calculation was made by considering the difference that speed is expressed as an integer in OOTP)
I think it is an unpleasant factor that pitchers in his mid-20s loses his speed significantly for no reason, which is neither realistic nor fun.
Reducing TCR or slowing the aging speed of pitchers and aging target age won't solve the problem. So this is a problem that cannot be solved by personal settings.