I have changed the config update radius without it having a effect on the game.

This was mentioned in #21 which i believe shouldn't have been closed as changes to the config file doesn't always apply to the world.

The update radius can't be set higher than 2 for technical reasons unfortunately. If you don't have any other questions / issues I will close this issue.

How can i solve players being able to see fake ores then?

You could:

• Try to improve their network latency / server lag
• Use engine mode 1 (unfortunately less effective than 3)
• Try an experimental build I just published that allows for higher update radius (performance hit is currently unknown)