Horrible passing mechanics, most forward passes are of a wrong trajectory/speed and deliberately go towards opposition defenders.
Also, forward runs by the CFs and SSs are hilariously dumb.
Only way I've found for players to move around is to pass the ball to someone with the 'Talisman' skill. Horrible teammate AI will not advance along with whoever's got the ball, regardless of tactic tweaking. It's a terrible PES if you grew up with the originals and it's a good PES if you started playing over the last few years.