Server Load Handling?
On ECO, you got physics running 24/7, that can be quite intensive... If your on a server, would the server be taking the full force of the physics count, while you play with a better running game?
It varies depending on world size. Smaller worlds, like 50x50, should have very minimal impact (<5% cpu utilization unless you have many clients connected at once). Larger worlds obviously increase that number.
There is an exception during world generation, which will use 100% CPU of it can. But after generation this will settle down.
We are always optimizing with the intention of getting as big of worlds as possible.