The general gist of running a Minecraft server is that you will need to install java, run the server, accept the EULA, and run it again. Once you have.
Server lag in ideal conditions on the other hand, is caused by having too many ticking actions (ie. too many mobs, players moving/updating, redstone happening).
Start the game, open it for connections (using /publish) and allow a player that connects to execute commands like gamemode, gamerule etc. The OP command isn't.
You can pay a virtual private server (VPS) provider to host your Minecraft server, or you can host the server on your own computer. Both require a modicum.
Select the server you want to enable command blocks. Then, click on the "File Manager" tab in the menu bar. This is where all of your server's files and.