Anecdotally, almost every progamer over the age of 25 has said that your hands and eyes start to slow down, and by 30 it is very difficult to keep up with young

Anecdotally, almost every progamer over the age of 25 has said that your hands and eyes start to slow down, and by 30 it is very difficult to keep up with younger players. This is not directly related to cognition, of course.