I refunded it aswell but more especially because of my specs, could only play to it in medium or high with some mediums, which isn't enjoyable.
The game is indeed full of bug at the moment but for the 2 hours and a half I've played to, it wasn't "that" annoying, it surely cut off your immersion sometimes (like when a police car goes through 3 walls and drift in front of you). I prefer to wait and play to it later, when the game will be patched and more optimized.