Not too many. But I used FM editor to make the tactic fluid etc. Then I made two saves to figure out the difference between the two tactics with the same formations (Zyndars 433 and "Le Tigre").How many signings you made?
Zyndars was more stable for me. With "Le Tigre" I could beat Man City away (thanks to corner setup) and then lose against Sunderland at home with no chances made. I gave both tactics half a season, I was on 4th position by December, and with the other tactic I was 1st.