Globe Map Configuration

I am trying to configure the globe map. I am following the instructions but none of my changes are taking affect. The default map is showing the locations but I am unable to change engines or zoom or default centre. I am making and saving my changes in opt/librenms/config.php . How often is this file reloaded?

Using the widget? If so, which widget?

I was using the globe widget. Your question made me re-look and I do see the world map widget and the settings do work with it. I guess the confusion is in the docs title being the globe frontpage configuration but referring to the world map widget and not the globe widget.