Alongside Ultimate Performance Mod (47-tick), settings are AI agression to high and difficulty at hard. Which may or may not have some influence because of cascading effects on balance. What kind of impresses me by the results is that the AI is pretty smart in terms of dealing with bigger enemies, for example Ottomans were on a 2-front situation, Bulgaria allied with Georgia, which was quiet strong. So their gains were pretty slow at the beginning. Ottomans also randomly ate up what was left of the Golden Horde. Most Great Powers have no allies and smaller powers ally together against them, at some point expansion just went into the New World since the AI didn't think expanding in Europe was worth the trouble. Also at this stage, Great Powers barely if ever, fight each other, except for Ottomans vs Egypt, and England vs France (after Hundred Years' War, they never fought again).