I have the same problem with version 18.104.22.168
Running thru a RaspberryPi VPN
ALL functions of the Maestro, including TX audio work fine
After about 30 minutes RX audio stops
Network is running about 48 msec, 0.04% lost
Only solution, turn off Maestro and restart
OR, if I connect via SmartLink, and cause disconnect with Maestro forcefully
I have no audio in the PC, but I tap REMOTE audio comes on
I then tap REMOTE and it goes dead in the PC, and I exit SmartSDR on the PC
AND then go back to the Maestro and connect to the radio again
It comes to life.
SO, it seems like something in the radio to do with the remote function
Hope that helps
What info can I collect that would be useful??