Having dropped New Vegas in the past due to lost interest, I decided to try this game out finally since a friend of mine was having a fallout 3 playthrough himself. It was it 8 bucks, so I figured why not. I have to say, I put way more hours into this game than both other Bethesda games I've played through (Skyrim and Oblivion) before even finishing the main quest line. The combat was excellent in my opinion, and I (seem to be in the minority of people who) really liked the story. The choices it forces you to make sometimes really had me feeling emotional at times. I also played it with some minor mods installed, just some custom outfits and real world guns for immersion. Nothing to break the story or anything, though there are a few DLC sized mods I'm eyeing up to play in the future. Overall I seriously enjoyed this game, I've noticed online it seems to be regarded as one of the least popular mainline games but I think it's become my favourite Bethesda game I've tried so far honestly. Seriously recommend anyone who hasn't played this yet to at least give it a try. It really pulled me in.
Edit: Since I'm done with F4, got New Vegas running with some nice mods to add gritty aesthetics and real world weapons. Giving it another try 6 years after I initially tried it and so far I'm way more into it!
Edit 2: more specific context
I believe that the character movement animation engine in Fallout 4 is capped at something like 30 or maybe 60 fps, can't tween. When I'm running on my 165 Hz monitor, Fallout 4 animation definitely feels slightly jerky. Starfield doesn't have this issue, so somewhere along the line, they upgraded the engine.
Funnily enough, the game is basically stuck at 60 FPS for me, even though I have a 144hz monitor. Everything I look up says the game engine wasn't configured to go past that and anything higher requires mods and such for it to be supported. I'm a relatively modest gamer who plays a lot of Switch, so as long as it's consistent I don't mind, I just keep it at 60.
Glad to know Starfield can go higher, but my computer isn't amazing so newer games just don't stay consistent above 60, I just cap Starfield at 60 as well.