Improve speed's queries

Hi all,

I am doing a project that it communicates with MS CRM via SOAP with PHP (using SDK 2011) . I want to improve the efficiency because it delays about 1 minute for entity-metadata.

This is the request:

<img src="https://i.gyazo.com/27445854110eef0334c2684caca92ead.png" />

Thank's so much.