Hi Sean
I feel like with all the different engine versions and testing I got a little off topic.
Best way I can summarize the problem is when playing, everyone hears the audio like they are at the viewpoint of one specific person.
So you can hear yourself only near them but you always hear their sounds.
The person everyone is hearing as can change on deaths and respawn.
I guess this is a little different than what I originally described but it is hard to narrow it down.
Does this sound like anything familiar to you?