The cpu absolutely is assisted in passing, so going manual yourself againt the cpu is an exercise in masochism. It's like playing a game where there are two laws of physics, one when you have the ball (slow, imprecise, laboured), and one where the cpu has the ball (high speed, error free nonsense).
Passing, tackling, and the instant reactions of the cpu are the main things that ruin this game.
To be honest, in terms of playing against the cpu, I doubt they can fix it. An error prone cpu just isn't built into the design of the AI model, so I can't see them even trying to bolt on a fix.
But they could so something about human v human matches. Agree with comments that assisted could be toned down and still playable by nobs.