Worlds loading too slow

I run pocketmine mp on a vps and it has a ssd storage arround 600 mbs but if i switch words it takes 10 seconds to load no matter what world i go. I wouldnt say its a fault of the network speed because it has 200 mbps what can i change in pocketmine.yml to make it load faster?

 

Load the world when a plugin enable or something

I believe there's a spot for this in pocketmine.yml

 

Can u pls tell me where it is

 

Paste ur pocketmine.yml here so I can see cuz I forgot

Or If u can type this line to a plugin's onEnable() or something it would be easier
$this->loadWorld("world");

 

Thank you very much. I found the property now it really loads faster