The process of fusing the physical and the digital world has been going on for decades, but it is believed that this will be brought to a new qualitative level with the emergence of metaverse, digital twins, and similar concepts. Synchronization of the events in the physical and the digital world is of central importance in the metaverse in order to have consistency and proper causal relationships between the events. To characterize the synchronization performance, one important measure is Motion-To-Photon (MTP) latency, measured as the time between a user’s action and the corresponding effect displayed in the virtual world. The other two measures to characterize the synchronization are standard measures of communication performance, data rate and packet loss rate. In practice, it is hard to meet all three performance measures simultaneously and one needs to look into the tradeoffs.