Thinking of it from a performance standpoint, not always the best idea - Although it can work.
The idea I had was we would after everyday of a full server, increase the number of slots on the server by 2 until we run into some problems that OneSync has (glitched cars, lag etc..) then reduce it until it all stops, then we would have that number on any server we host (for FiveM)
For S2, we would use the standard 32 just for performance sake on both S1, and the actual server itself