Bedrock
Minecraft Bedrock Dedicated Server
Single-Threaded Game
Minecraft is single-threaded. Adding CPU cores will not help. Only raw clock speed and config tuning do. Reduce view-distance, limit entities, watch redstone.
Bedrock, Not Java
This is the Bedrock edition (mobile, console, Windows 10/11). It is not compatible with Java clients, has no EULA file to accept, and does not use RCON — the in-panel console talks to the server directly.
Settings Applied Automatically
Server name, gamemode, difficulty, cheats, max players and Xbox Live authentication are written to server.properties from your Startup tab. You don't need to edit the file by hand.
Official Documentation