If you have LibreELEC and DVB-S on Astra 19.2 you can reproduce this error.
On LibreELEC 8.2.5 i had no issues with tvheadend to watch live-tv with channels that switch local programm. There is even a test channel named Test-R that does this switch every few minutes when you need that for developing exactly such things. Just tune on this channel with your LibreELEC 9.0.2 and watch it freeze up: Test-R Frequenz, Pids vom Sender auf Astra 19.2° Ost
Kodi log when this happens ends with thousand of lines with "large audio sync error" and the screen is frozen.
example:
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