Crashes, bugs, Destroyed Score. Thank you Ubisoft!

Straight from the start: As a big fan of the series, I was a long time prepared on the ignore one or other small bug and to enjoy the great thing is gameplay. The story itself is in my opinion top, designed the scenery beautiful and it also comes quite Assassin's Creed Feeling on.

The reason for my 1 star rating but the following:
After I have today (12.20.2014) download more than 5GB update into the game at first without problems. I had previously only crashes associated with other software, but this was my fault. Within 30 minutes of the game after the patch my computer (Win 8.1, drivers currently), however, crashed with blue screen 3 times, which in itself is annoying but although still would be to cope. If it had not shot up my Scores after the second crash.
The upshot is: I have the game just before finishing the story (opening sequence 12) uninstalled, because there's nothing more frustrating idem, as it already to start from scratch. I hope Ubisoft learns from his mistakes is testing before the release reasonable, instead of waiting for the S *** storm by customers. Such a gaffe can not happen!
Christmas shopping or not - I would have preferred to wait a quarter year on a finished game.