I have started a Porto save about a week ago and the tactic i am using is a 4-3-3. Feel free to try that out. Go to the tactic section and search high defensive line fc porto v2, or use the link below. That's the tactic i'm currently using, with a 79% win ratio .i was thinking in 4-3-3 (4-5-1), its my favourite formation but in this fm seems that dont work :/