ok trial installed. simulation gameplay. what defending settings are the best one? in my head i should be using tactical but i cant remember (i havent played fifa for a long time)
player based difficulty? off?
ant other CPU sliders i should be changing?
Everything is personal preference!
So the tactical settings are a new setting, this is the first year they've been introduced and they impact the AI's decision-making.
If you want to permanently slow the AI down, you can set custom sliders here and e.g. lower their "first-time pass" slider. This means they take more time on the ball before passing it (you could, in theory, use this to "pretend" the AI has to take a first-touch of the ball ever).
However, if you set it to "tactical", they change match-to-match depending on your opponent, and "dynamic" means that rather than being "hard-coded" sliders per team, it changes slightly each time (even if you play the same team ten times).
Personally I like "tactical" because it seems more realistic and makes playing each team feel unique, rather than playing in different ways each time. BUT, I'm starting to wonder if custom sliders for this will prevent the AI from being far too fast/clinical at the higher levels (to a mind-reading-alien degree).
Player Based Difficulty for me is a no, because it just makes the star players behave like aliens compared to the rest of the team (especially on WC and above).
I wouldn't change the sliders personally, other than to set them to "simulation mode". In my experience, custom sliders result in a poorer defensive AI.