What is the maximum distance two players can be separated by and still synchronize like they are in the same room? Short Answer: 25ms Long Answer: The maximum one-way delay between two players can be 25 milliseconds. That is the amount of time it should take for the sender to strike the note, send it across the Internet, and be heard by the remote receiver. Since network travel times vary as a result of many factors, not just distance, there is no exact answer to this question. However, the general rule of thumb is approximately 0-1000 miles. Again, this will vary on each connection, even within the same session. It is still possible for players in a session to synchronize their playing when one-way delays exceed 25ms, but the effects become more apparent as the delay gets longer and the players have to work harder to keep their playing together without slowing down. There is no "hard" number for maximum acceptable delay, but most players will find that one-way delays in the 40-50ms range will be very noticeable and will require much effort to subdue the natural tendency to slow down in anticipation of the remote player's sluggish audio stream.