One Problem I am having with Live

I have a huge problem with my starters getting substituted out way too quickly and frequently when they are not even fatigued. I have tried several substitution frequency and fatigue slider combinations, but none of them seem to help. At one point while playing with the Suns, whenever I attempted to put Amare Staudemire back into the game after he was subbed out, he would literally come back on the court and then be subbed back out of the game for Kurt Thomas. Also,it seems that when the substituion frequency is very low the starters still get substituted out to early and they just take longer to get put back in the game.
PLEASE HELP

are you sure you are changing the USER substitution frequency or the CPU substitution frequency?

put it to zero and do your own manual substitution when needed