I run MSFS v1.16.2.0 and this problem has arised a few updates ago.
When I set my frequency to get an ATIS report from any airport in the world to any aircraft, the whole report is textually displayed on screen but the radio voice stops after a few seconds, leaving most of the report unspoken.
This only happens for me if I switch frequencies while listening to the ATIS. It will keep scrolling but no audio, maybe check that something isn’t switching frequencies. Check to see if your keybindings are doubled up or something.