Update Now läufts halfway around

Passers fly on roofs, I fall through the world. Interaction in prison with the door leading to the complete crash. Arno is then only in pieces in the ground. This is at any time reproduzierbar.Ich have started three times from scratch. I then the 3rd time this tries to skip. If Arno goes to sleep comes only the message "Loading". After 10 minutes I left quake.
Settings high
Hardware:
I5 4670K @ 3.8
16GB Corsair 1600
GTX780 Jetstream
Win 7 64 bit

Update:
Meanwhile, I got it back up and running. There were several files defect which had to be repaired. Small bugs like falling through the world still occur but Paris is really pretty. The gameplay does not stand out from previous AC. If that is like good advice at this game. Otherwise the stroll through Paris's been a really nice experience. The boxes, which can not be opened because you ne to Handyapp and ne additional web login required annoy me. Partly annoys me the senseless rumgehopse just to collect any glowing rings. The part I think is more likely to jump in and run. But prolonged halt the game without really fun. The missions are repeated, but this is also nothing new. Overall, however, 3 stars definitely earned. The graphics alone would be 4-5