Sure, thanks for the reply and sorry for delay in my reply (due to these messages being quarantined). For the last few months, we get between 0.5 and 1 second lag on the audio in MS Teams meetings - so the audio lags the video. It seems to be in all situations - at home, in the office, elsewhere, on WiFi, on Ethernet, on full client version of MS Teams, on browser version, all software/drivers fully up to date. We've studied the Call Health etc. and there doesn't seem to be anything remarkable there. I was particularly wondering if you had come across this issue before? Unfortunately, since this session, I have now found out that we won't be getting this version of MS Teams anyway (at least not any time soon), because we have an Educational licence.