I'd assume at some point they would just stop the regeneration of droids entirely? Initially I thought this could be easily done, since I thought the droids that you'd already killed would stay dead, but they seem to infinitely regenerate. Vette now stays passive automatically whenever I go to one of the other sides to the left or right exit to the room as well. Legit hope they fix it, because I've cheesed it many times yet I still can't do it and my gear and credits are seriously suffering for it.