I am trying to use a new Raspberry Pi 4 (with 4 GBs RAM) as a Minecraft server for 5-6 players. Would it perform well or is it just more worth my time to build a server.
According to gamepedia you require 2 GB ram and a Intel Core 2 Duo for 5-10 players, so I expect your server to run great.
i'm running with rpi4 4gb (allocating 2.5gb ram), runs fine for 4 people, although at times i'm still getting the "running xxx ticks behind error" in the console. I've got a 54Pi knockoff fan, which at keeps the temp from 40-45C. I've overclocked to 1.75ghz, running fiber optic connection, so far pretty good. will try to run with a few more players soon!