I have an environment with an Octopus NET Pro (server for SAT>IP), a Raspi PI 500. Before that I used a Panasonic TV for several years, showing TV via SAT>IP - and it works over the years without any problems.
I switched to the PI5 and LibreElec 12.2.1 last week - because the Panasonic died and its very difficult to get SAT>IP TV Sets.
The problem:
I can not view NDR SH HD every day between 19:30 and 20:00 - this is a regional TV program here in northern Germany and at that time, the broadcaster switches to various regional region program (Hamburg, Niedersachen, Schleswig-Holstein and MV). The program freezes at once, when the broadcaster switches. With the Panasonic TV this was not a problem. I use the Octopus NET PVR client.