I saw the IGN review claiming the issues also, so when my copy came in I prepared for the worst. Nothing happened though it runs fine for without any issues except a little screen tearing but not slow down or NPC's taking a while to pop up. Maybe the Xbox they were using was in its final days. There was a day one update so maybe they addressed that issue with the patch. They also could of had a pre-release copy but im just talking out loud there.... It runs fine on 360 go ahead, buy it.