Many users have reported issues with BDA driver and diseq commands for switching from one LNB to another.
More info on this thread:
https://forum.team-mediaportal.com/viewtopic.php?t=13621&start=0&postdays=0&postorder=asc&highlight=
More info on this thread:
https://forum.team-mediaportal.com/viewtopic.php?t=13621&start=0&postdays=0&postorder=asc&highlight=