I can't tell if I'm glad that the AI is dumb. I just fought two wars in heaven in separate save files, which ended up being relatively easy victories for me in the League of Non-aligned Empires despite my allies being pretty useless.
However, those would have very easily not been easy victories if the awakened empires were much smarter. They frequently left their powerful fleets parked in remote systems instead of sending them to deal with my fleets, or using them to harass me by taking border systems. By the end of the war, I was just jumping fleets into those systems and wiping their fleets out piecemeal to get enough war exhaustion to get a status quo peace.
On the other hand, I'm kind of glad they are dumb because there was some serious BS in one of those saves. An awakened empire fleet was flying through my space and was in a system with one of my planets when the war in heaven triggered. Said fleet immediately flew over and started bombing the planet, and would have easily taken it if an army fleet had been with it at the time. Or, honestly, if the fleet had committed to what it was doing at all, since after a year or so of bombing my planet it just left. I was under the impression that fleets are supposed to go MIA if they're in hostile territory when you declare war, but I guess not.
Guess I should start closing my borders by default from now on. Or at least to awakened empires.
Unrelated to the above, but the game definitely seems buggier after 2.1.2. I currently have a scientist that can be assigned to multiple science ships or research positions. I also just watched an awakened empire's fleet slowly drift across a solar system, cycling between trying to use jump drives to get to a system and just flying there the old fashioned way. After the fleet finally made it to the hyperlane point, it flew over to the next system and then finally used its jump drive to jump to where it wanted to go in the first place.