Not sure if this counts or not because I used ruler designer with every trait set to 0. The bases of the stats are low it's just the traits that pump them up so much. I was having some real difficulty playing as the Karens so I decided to just say doodle it and see how fast a real Saoshyant could restore and further Sassanid rule to the world. Turns out if you have above 20 in every stat you can basically say toodle do you to the entire world and disregard truces. You still get buttloads of prestige (I would have like 90,000 if not for the truce breakings. But holy wars, holy wars holy wars. God DAMN holy wars. The records I am going for (if this counts because lolrulerdesigner) are old gods start quickest Persian Empire, quickest zoroastrian restoration, most character piety. (Feel free to count it for more though if it breaks any other ones or sets them.) Started in place of the Karens with Ardeshir Sassanid IV, rightful heir to the empire of Persia and savior of the world.
878 11 20 Persian Empire (Blitzkriegs work so well in this patch, you just become an unstoppable steamroller once you cross the 20k troop count.)
881 6 20 Zoroastrian Church
15.2k Piety on Ardeshir IV Sassanid "The Saoshyant"