The game froze 3 times in a row from using the game chat. Specifically, I was trying to have a conversation and kept the down on the d-pad pressed continuously. Game froze, the other person was able to hear me although my screen was frozen and didn't respond to any action (besides pressing the guide button to get out of the game completely). Quit the game, rejoined same server, and happened again. Quit again, rejoined same server and froze again for the third time (person was able to hear me, I wasn't able to press anything besides the guide button). After that, I was forced to used party chat and not to bother with push to talk.