We all use discord for a reason 
The desync bug, cause of many bugs - #21 by NotScott pretty much says it all. I’m surprised @Mathieu_D didn’t say anything!..*(%%#@!$^#%$(^%)!
Orbus has had a voice problem as long as Reborn from what I remember. I’m pretty sure it used to be okay in the old Orbus… Hang in there or use Discord! Re-logging also fixes it in-game.