Runs okay, but has staggering loading times. I have come to learn loading times are a given on consoles (PC master race 4ever!) but FO4 had some serious loading still, the kind where you can go take a shower while waiting
I also got a game-breaking glitch, in the start of the game, timed in such a way that you really have to start from the very beginning when it happens (it freezes up at a short cut-scene right before allowing you to play the game in earnestness, after finishing the ridiculous introduction with the vault tek guy and the nuke and stuff)
A lot has allready been said about FO4, one thing that hasn't been said to death yet is the facial expressions in your character. I guess this was another "look what we can do"-factor, flaunting responsive animation, but my jesus how irritating it got "Yes, I can do that for you =D" "No, I'm busy right now :'/"
Prepare to grin like a maniac every time you agree with someone - so naturalistic!
I finished it, complaining and cursing all the way through, then let it gather dust. I picked it up again recently, I was without internet for a while, and that's often when I do weird stuff like that, but I just couldn't deal with the facial expressions, even with all the rest of the game, I could brave through it, but the facial expressions finally got the better of me. It is unlikely I will ever play FO4 again.