Re: strange behavior with NVDA 2019.3
If the cut-outs are always at the beginning of words, and he's using Bluetooth audio, it's the Bluetooth Audio that is the problem. There is an NVDA Add-on, BluetoothAudio, that is meant to remedy this issue. If it doesn't work, there is another alternative in a program called Silenzio, but it makes sense to try the add-on first.
Brian - Windows 10 Pro, 64-Bit, Version 1909, Build 18363
Power is being told you're not loved and not being destroyed by it.