I have had gradually increasing success over 3-4 seasons playing Savilla in La Liga using v4. Last season pipped to top by Barca by only 2 points. My problem was drawing more games than any other team. I realise the way to overcome this is in-match tweaking to more attacking options whether home or away. Now I have a stronger team I often tweak to team attack (3 notches); passing and tempo normal, at start of match. This works. This tactic plus very good training equals impressive results. I do not see it as a quick fix however. You need well trained players.