I have to agree the AI of your team reacts slower, especially from set pieces, dead balls, goal keeper throw outs and example throw ins are frustrating, when your player chests the ball to control it before u make a move the computer snatches it away...
It also feels like u are playing against 6-7 in the box defenders and I have not seen any changes when u go ahead by 3 goals, prob need to do some modifcation of squad tactics of your team and opposing teams, crosses go in but headers seem to be soft or go over the bar if u can hit one against what is pretty much always a very crowded box ....
Substitutions well so far i have noticed the computer changes 3 subs in last 3minutes of the game. Once i was leading 3 - 1 and the changes where 3 at same time with 7 mins to go...
I think there is lack of ball shielding like in Pro evo, where u can hold the ball
up while, I have not had a time to try all trick stuff maybe there is something in there. I just changed and got it on 360 now, Pc version is not nice, the ball looks too big and looks like they are kicking a huge lollipop....
I will still give it a go use different type of play like stony suggested to get around these probs and I edited my team made them all out attack and pushed up manually players and defence up high in my new formation 3-4-1-2 and i have scored some nice goals..