I am a 99 in all 3 aspects of ball handling but since I got to that level my to/g have quadrupled. But not because I'm doing anything different. It's because of stupid things the AI does, such as my passes going right into the chest or legs of a defender 2 feet in front of me or something ridiculous like a defender who is standing BEHIND a teammate I'm passing to somehow managing to steal the ball without the ball ever reaching my teammate. Huh? I was charged with a turnover several times when the perfect pass hit my teammate's hand but he fumbled it and the other team got it. That would be a turnover on my teammate's part, not mine. I've been called for a turnover when I throw a pass to a teammate who is standing still along the sideline and after receiving the pass he steps out of bounds for some reason. Again, that is his turnover, not mine. I've even had the ball stolen as I was HANDING the ball to a teammate who was behind me by a defender who was in front of me. Even watching the replay in slow motion I couldn't see how the defender ended off with the ball. It just appeared in his hand. Right.
I've had up to 10 turnovers in games because of stupid AI decisions. In the meantime, my assts/g haven't gone up any. Still avg 10.1 assts/g. That's not bad but I would think it would go up some, especially while playing for GS.
This kind of stuff was not happening, or at least I wasn't getting charged for a turnover, before I maxed out the ball handling ratings. Maybe I'm just stupid but I thought as your rating went up you got better at the skill. Recommendation, don't max out the ratings.