It's one of the reasons many people prefer NV to FO3 is less bugs/crashes and overall smoother gameplay. It's a newer game though so that's expected.
Apparently you get Fallout 3 free if you buy Fallout 4 from Xbox. 3 is backwards compatible now, but New Vegas is not. Disappointed.
I am really enjoying it. I'm not really sure how the perks system works yet, but I've probably put 8 or so hours into it and really like it thus far. I can play for 2 hours and it feels like it's been 20-30 minutes.
It's pretty damn good. I've hardly progressed through the story at all because I keep getting caught up on the side missions and exploring the different areas. I just finished the part of the story where I had to rescue Nick Valentine.
That's roughly where I'm at. Haven't completed the Valentine mission yet though. I just got to Diamond City.