Again same map and settings as my last post
custom map, 16 planets, 100 ish stars
Me and 4 Computers (Normal Difficulty, Random), Pirates On.
I fought many battles between very large fleets with 100+ ships on both sides (plus strike craft on top of that)
Each time I found the AI would retreat after a while even when there was no clear outcome to the battle yet (to my eyes at least). Neither side had destroyed more than 15-20% of the enemies fleet and yet each time (at least 7-8 battles) the AI would suddenly retreat all of it's forces.
I also noticed, as mentioned in another posting, that when the AI attacks me, it tends to arrive a bit out of sync. Like half the fleet arrives and 2-3 minutes later a bunch more arrive. sometimes as the first group is starting their retreat.
Going to play some smaller scenarious and see if there is similar behaviour.
Cheers