I've started playing it on PC (only for a couple of hours) and so far I love it. Characters are good, the graphics are awesome (I have a pretty good PC, but not a super beast), the storyline is really interesting. I feel the vibes of great role playing games, with lots of choices and consequences. I have to get used to the gameplay and the vehicles are definitely weird to drive (like in Borderlands), but I really like this game.
I haven't had bugs yet, but, in any case, I'm sure they'll correct all the bugs in the next weeks/months. They had too much pressure to release the game, so the devs couldn't finish the normal work in time (the Witcher 3 had bugs in its first version too, then they fixed them).
CD Projekt is a good company, perfectionist and customer-oriented. Maybe they've been too nice, but they'll finish the job. That's what perfectionists do.
As for multiplatforming (PC, consoles, etc.), it does makes things more difficult, but at least everybody can play it.