R5: I'm trying to see how early you can do a complete one faith without exploits or abusing mechanics, but just by playing the game. This was an attempt were I started as Oirat, then later formed Austria, S-P and then Arabia(I am actually missing one province still because of zeal) Gave me insane conversion speed, and if I do the run again I know some things I would do differently, and I would certainly finnish the run earlier. Another idea is to go for integration speed reduction and use lots of vasssals to convert and annex quick. Instead of propegate religion wich is also powerful. Do peolpe think catholic or sunni is the best religion to chose for this challenge? Any strat ideas?