Single player broken?

I have 115 hours logged on this game is its a good time. I play the game solo because I have a very busy work schedule and like to play the game on my own time. Having said that, I have noticed that many things do not work in solo mode especially most of the NPCs wont attack. They will run up on you but then nothing happens. I have searched for this but only turn up some posts from a long time ago. I was hoping that the final release would fix this. I would love for this to be fixed because there is warrant (at least for me) to play solo. Any info would be helpful. Thanks