We have all tried VOIP on both settings (voice activation and push to talk) but only one of us can be heard in game...two of us are unable to talk in game regardless of what settings. We have tried voice volume and threshold on every type of level and nothing works.

VOIP has never been an issue for us and even on experimental we where able to have 3 or 4 hour runs just using voice activation instead of push to talk. It seems the problem is the issue which was about a year ago when some people where able to use VOIP and some where not.