I'm having problems in game sounds. Two very noticeable issues are missing voiceovers and lack of environmental audio.

My wife and I play together in the same room, she's using Windows 7 and I'm using Windows 10. When doing the main quest together, I can hear the voiceovers coming from her PC but none from mine. Likewise, the sound of my character's footsteps never changes whereas her character's footstep sounds change depending on the environment (such as running across the train tracks outside Ul'dah).

We've already compared sound settings in game, so it's not that. Also, voiceovers and environmental audio work fine for me in other games (such as ESO).

Anyone have suggestions on what I can try?