Hello sandmac, I haven't test a lot last time but now I have vacation and I can continue to test. With the durability at 56 You see definetly O.T.B and loose ball more than 58 or 60. I'm not sure if durability has to do with resistance of player to not fall easy on the floor. I test also with speed and I see different results. At one slider combination I see more charging blocking fouls but fewer loose b. And o.t.b. Than I get with other slider changement the opposite. I couldn`t figure out exactly which slider affect The loose ball and o.t.b. only that I force now more shots that hang in the air. Positive is that the average of personal fouls has rise. I get now for cpu and user 17-23 fouls with realistic FTA. With more tweaks I try to find the best balance of foul calls.
I get loose ball and O.T.B fouls where I need it. But the sliders of nba2k15 is not stable. Sometimes it make me angry cause you dont know why parts of the gameplay has changed and you haven't touch it.
You said with defensive consistency you see more fouls. It's the game play sliders or roster edits.
next step I will change roster with "attack strong on drive" and force offensive foul and than reduce the offensive foul slider. In my current set the O.T.B and loose ball have the lowest values, so you see normaly lower foul calls at this point.