I'm perfectly happy with the graphics and I think I've already detailed my disdain for those complaining about them. The game looks stellar. I'm not really a screenshot-taker so much these days. If I happen to take a couple I'll post them.
But yeah, I will say that this is easily the worst PC interface I've ever seen for a Bethesda game. It makes Skyrim out of the box look like a fucking masterpiece. It's really a mess, and it does give one a very bad impression, which is probably one of the reasons people are being so rabidly hostile on Steam. Apparently the game also suffers from savegame corruption, like way too many of these games have. Apparently the trick is to never rely on autosave and never use quicksave. Always save a NEW save slot, and just delete some of your old ones when they get too prolific. So far I haven't had any problems. The game has a bit of jank, but it's basically the same jank Skyrim had. No crazy bugs yet, though I do have one area that's broken from a bunch of textures being present that shouldn't be. Like where doors and windows are supposed to be clear, there's this horrible low-res texture there, and the whole area itself has several huge blocks of them floating around which make it sort of unusable.
I don't want to spoil things for people who want to go in blind as possible, so I'll abstain from specific comments. But there is so much more to the progression of this game, so much more to do and work towards, which I really appreciate. Fallout 3 did a great job of just providing great content to interface with, and while this seems like there will be probably "you wanted more, so here's more" on that front, there are some new systems that have the potential to be just amazing. I'm looking forward to seeing how deep it all goes. But I think it's safe to say that as long as your system runs this, you aren't plagued by some of the crashes or won't-start bugs others have had, and you're okay with using a controller, this is a great game. It's a bummer those other blemishes exist.
Oh, and if you're left-handed and want to play with mouse and keyboard, forget it. Numpad keys are reserved for hotbar. I saw one guy on Steam deliver a 8-10 paragraph negative review based on that fact alone. So if that's going to bug you, be warned. But again, the interface on this is so fucking bad you're just going to want to plug in your 360 pad anyway. Or wait for somebody else to fix the UI.
And while I'm thinking of it, one final note about dialogue, because I've seen tons of complaints about this too. FO4 adopts a Mass Effect-style system instead of you reading and choosing long lines of responses. I've seen a lot of complaints about this, and those are complaints from people with no understanding of how dialogue trees actually function, which is to say that they largely don't do what people think they do. Most conversations are still linear with dialogue trees, you're just given the illusion of choice, and at most you maybe get a couple extra options or opportunities for your character to act a certain way. At best. But in the end, 99% of players always mine every single line of dialogue anyway trying to get all the information, or they just want it to go as fast as possible and skip the details. This system lets you do exactly that. It doesn't reduce your choice, but gives you a quicker and more efficient interface to engage with your choices. And on the side of "but my character needs to act a very specific way!": the things you said in past games were pre-written. You didn't decide them, you just read from a group and picked the one that matched your character's theoretical viewpoint. This allows you to do exactly the same thing, you just don't know exactly how he's going to phrase it beforehand. It is functionally almost no different. So if you're going to start complaining about how the game is dumbed-down and OMG we can't roleplay anymore, just stop. Right now. Step away from the Internet.
Anyway. tldr: Most people dissatisfied with Fallout 4 on PC are either furious about bugs, frustrated by interface issues, or just mad that it isn't exactly the same game as New Vegas. Which means that per group, they're either unfortunate, legitimately annoyed, or should just go play New Vegas and shut the actual fuck up.
So that's as close as you're likely to get to a review from me. I think it's a winner so far.