Webhook expected approx execution/delivery time

I have a case where we have a webhook passing details to our backend system via post methods on Create or update ticket via trigger.

I have observed that it takes almost on average 2 - 2.5 seconds for zendesk to send the request. 

Is there a way we can minimize the zendesk trigger time.

We also have other trigger such as Set, Assign and Notification, last trigger is the webhook. one.