A method for environmental delivery network prioritizes groups of data for transmission based on a various factors such as synchronization requirements, endpoint configuration, and the fidelity of sensory stimuli reproduction. A device detects data missing from a group of data received from a server and replaces the missing data with replacement data based on a predetermined value. The predetermined value may be based on a default value specific to the sensory stimulus missing data, data received prior to the missing data, or data received prior to and after the missing data.