I started playing my other saves which are around the same timelines, same things happen. After some point AI goes retard. In my Battania campaign, they all are at war with me and none fights each other. Since Battania is in the middle of all other factions, I am doing circles around the country trying to defend cities and castles. It is FUN !
Funny thing is, we are at war with 3 factions and my country keeps declaring war. Even if it fails, they try until it passes. Can't go against it since influence gain got nerfed. When I try to propose peace no one accepts it ( says "45% supports" smh, it is always 0 during voting ).I think I will take a break until a fix comes along, otherwise this is really senseless, you hit a wall and it gets into a grind.
Devs, would be great if you can take a look at this