In some embodiments of the present disclosure, endpoint systems participating in a shared virtual environment simulate objects locally that a user of the endpoint system is likely to interact with. In some embodiments, object authority is thus managed by the endpoint systems, and is not managed by a central server. In some embodiments, a subsequent endpoint system likely to interact with an object may be predicted, and object authority may be transferred to the subsequent endpoint system before the interaction in order to provide an immersive experience for a user of the subsequent endpoint system. In some embodiments, efficient techniques for transmitting notifications between endpoint systems are provided.