I call bull**** on players needing to get used to different formations, the game is just too simple for that. Hell, half of the times counter formations don't even work, you'd think they'd fix that before adding subtleties such as players mindset and habits etc.
When you say "Hell, half of the times counter formations don't even work", do you mean that when you change formations that your team does not play as well and you don't win when you expect too?
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