Truth is, the game is rough around the edges. It has some lighting and depth of field issues which can make ths game look a little blurred and over reflective at times. Some of this may get fixed in patches. It isn't a polished technical masterpiece like that of Uncharted or Last of Us.
But if you play it for an hour and don't get sucked into the fictional world of New Bordeaux (New Orleans) with the period vehicles, shops, radio stations and culture, then you aren't playing it right. Just like GTA, the world just works. The details, the atmosphere and culture is so on point, it feels like you're part of the late 60's, even if you aren't a relatable Afro-american male.
There is an option to change vehicle handling from normal to simulation. And in my opinion, Simulation feels like GTA IV's boat car handling which i prefer to be honest...
I'd say this game is like an uncut diamond. Rough around the edges but at it's core it's a gem that pleases in the right way.