As a general note regarding reconfigurations, one thing to point out straight away is that from the way it has been initially set up the DRM standard offers full support for all reconfigurations as this is right from the start a minimum receiver requirement (MMR).
The document on MRR is posted freely available under https://handbook.drm.org/.
In this respect, there is no prioritisation or classification of how important a specific event is for a reconfiguration to take place.
The document simply states: “The DRM Receiver shall handle all reconfigurations.” and,
therefore, there is no certain time during the day or a specific moment when a receiver should expect a reconfiguration.