So I mistakenly muted 2 people I actually want to hear talking to me, but once I muted them I realized I couldn't unmute them or adjust anything on the voice chat menu, I need to adjust people's volume while they are talking with the volume adjust keys and once I mute them there is no way to unmute them... I can't be the only one having this issue.
PC or that other thing I once heard had a backwards version of a version of a dream of PS2? PC > useroptions.ini > [voicevolumes]
It seems there's a bug ATM where adjusting volume or mute in the menu doesn't work. If you watch it, it just reverts back to it's old setting within a second or so. But what does still work is adjusting it by hitting -/+ or [ENTER] on num-pad while they are actively talking. So: while those people are talking (look for their name at bottom of your HUD screen), quickly hit Enter on the num-pad to toggle their mute on or off.