All guardians such as Ether Drakes and the Dimensional Horror are invincible. I have massive fleets and drop their shields in seconds but theyll take no damage past that. Happens on every save Ironman and not. Even tried with Ironman off and used console command to make my fleet invincible and still nothing, just an endless fight. Ive backed out to menu and reloaded save, exited the whole game, verified the integrity of files and still no. The only thing I think I havent done is reinstall.