Where are optimization/config files, and how do I disable features like the Nether?

Feature toggles and performance tuning for your Minecraft server live in your software's config files, all reachable from the Files tab. Whether you want to switch off the Nether or squeeze out more performance, this is where it happens.

Where the config files live

Core toggles sit in server.properties, while Paper and Purpur expose deeper tuning in their own dedicated config files. All of them are editable in the Files tab.

Editing config safely

1. For core toggles, edit server.properties — for example, set allow-nether=false.
2. For deep tuning, Paper and Purpur use files like paper-world-defaults and spigot.yml — see the Minecraft KB for those.
3. Save while the server is stopped, then restart from the Console tab.

Tip: Disabling the Nether and End, and trimming view and simulation distance, are among the biggest and safest performance wins you can make.

Frequently asked questions

Which file should I edit for performance? Paper's world config files hold the meaningful tuning knobs — they're covered in detail in the Minecraft KB.

Do I have to stop the server to edit config? It's strongly recommended. Editing while running often gets overwritten when the server shuts down.