All models are different.

Usually the rooms consist of:

- room model (walls, floor, ceiling)
- dummy light models (an invisible simple cube model)
- dummy character position models (an invisible cube positioned at doors)
- dummy cam models (an invisible cube model we use to place, move and switch the camera)
- environment models (doors, windows, flowers etc.)

I removed all actions from the models in the room that crashes, so there shouldn't be a dependency that can lead into the crash (at least I hope so).

Yes, a lot of models share the same action.

All models the player can interact with have an action called "useable_object". But this one was also removed in my tests.