Hello PhillyCheese!
Specific audio cues being dropped can actually be due to a network traffic setting, which exists to aid players on limited-bandwidth connections. The trade-off is losing some audio cues to ensure movement/positioning data is transferred.
In-game, go to Options > Gameplay and look for these settings:
Limit Client Send Rate
Limit Server Send Rate
Make sure these are both “Off”.
Best of luck in your adventures