The world class difficulty is insane right now, same as game 3 in the weekend challenge. I posted in the other thread how to beat it, but in short, avoid sprinting and trick dribbling, do not use attacking mode, and focus on quick passing (although that's tricky with broken passes atm) to get your CAM into a shooting position outside the box. If you are leading, keep possession by passing around in the opponent's half. If you drop too deep into your own half, the AI pressure kicks in. It's irritating but still beatable.
