I have a Zaphosting server with 3GB Ram. About 3-5 players play continuously on the server and often the server has a ram overload and is therefore 'blocked' for a few minutes. Can you do something about it (besides buying a ram upgrade?)
A server shouldn't crash if there are only 3 players at 3 GB.
Look in the log to see what kind of message comes before it smears
3-6 players should get by with 3 GB of RAM at the same time. Do you have plugins or mods on the server that draw a lot of power?