In LFS, RCM messages are often used by administrators to (re)start races after a safety car, or when a rolling race start is used. This will usually be a message saying 'Green Flag!', or something similar.
A possible problem which I have observed is that these messages don't seem to arrive to all clients simultaneously, and I therefore propose that there is another form of RCM which is displayed at the same time for all clients.
This could be implemented with something like a 1 second delay on the message being displayed, to account for any acceptable ping rate, and could use the same technique LFS uses to sync start lights at the beginning of a race.
A possible problem which I have observed is that these messages don't seem to arrive to all clients simultaneously, and I therefore propose that there is another form of RCM which is displayed at the same time for all clients.
This could be implemented with something like a 1 second delay on the message being displayed, to account for any acceptable ping rate, and could use the same technique LFS uses to sync start lights at the beginning of a race.