I quit fifa this year because the game will alter your ability just at the time it may result in a goal or stopping a goal (nevermind the cpu increasing ability). Passing suddenly becomes shit when you get into the box even though was fine before that point / through balls slow down - then suddenly pick up speed so it can travel to the keeper to scoop up / keeper and defender clears will magically sail to the dmf over and over like it is on a video loop / my defenders would suddenly not close the gap when I am ahead in goals / Tackle the ball away from the CPU - it magically travels to another player, and even better when they tackle it away from me it becomes a pass to another CPU player. All these items and more made FIFA15 an absolute mess. FIFA programming is nothing near perfect or even passable as a game worth purchasing for $60
I know this is from a few months ago but i have re-visited fifa after playing pes for a week and everything you wrote is so dead on in regards to fifa.
What fifa seems to do constantly is deny you glory.