I too experience this just about every session. Turning off ATC audio effects seemed to have helped. But now it sounds like everyone is transmitting from their bedroom, 6 feet away from their microphone. I think I've noticed the issue occurring most when people are getting stepped on (2 people are transmitting at the same time) but I am not 100% sure on that. I hope this is something that gets fixed. I am using the latest version of V-Pilot.