The last update introduced several new audio problems:

• Music cuts out after a few moments in mission - if it starts at all.
• Messages are randomly cut off when in combat - when out of combat messages tend to complete.
• Audio presets only work temporarily; sound reverts back to 'Default' balance, but options still show my chosen preset.  Switching between Presets or restarting temporarily restores the selected preset, but it usually lasts only a few seconds before going back to default.