Audio issues on the public beta (strangely didn't got them in the private beta) were quite concerning to say the least. Game went full mute during a mission, so I decided to stop and disconnect. Loaded again the mission (the TV studios one) and after 2 minutes, got the same. Closed the game, restarted it, and it lost completely the checkpoint, with the results to start again from point zero. I went through half it for the third time, again no gun audio and then full mute. I almost lost myself.
Aside the specific mission, audio has anyway a lot of bugs with guns and dialogues. I'm not entirely sure is a purely loading issue, I'm pointing finger also to a server-side error that may conflict with the in-game audio. Even the GPS had crazy moments in some istances.