Good afternoon and thank you for posting on the Final Fantasy XIV Technical Support Forums.

Can I get some clarification about your issue? When you refer to the 'map' are you referring to the mini map or just things on the field in front of you? When you say the sound occasionally stops, does the entire game mute, or do only certain sound effect not play?

This may be related to server congestion. Since this is new content, it makes sense that some of these issues will crop up (and why other instances do not).

We hope we can be of assistance in helping you enjoy the exciting world of Final Fantasy XIV!