I've played Bioshock Infinite for about 18 hours and started to notice some UI freezes in the game, that have made the game unplayable. The UI started to freeze as soon as I tried to loot some NPC or object. It doesn't show itself timely, the UI is half-transparent and doesn't react to keyboard inputs. The whole bug resulted in the game freezing as soon as I ALT+TABbed or opened the main menu of the game.
It is complicated to completely describe this bug in words, that's why I'll link the video with the same effect here, that I've found on the Internet: