How long taken while loading data in Power BI Dashboard if configured in cloud Power BI gateway

Loading Data in Power BI Dashboard through Cloud Power BI gateway

I developed many reports and power bi dashboards. For that, we used many gateways which will be installed in many different servers.

Now, organization has decided that, they have created and configured in one common gateway in cloud. we have lot of doubts while using the common gateway as mentioned below.

1. if we are using common gate way, all our organization reports,dashboards will data loading faster...?

2. some of our data has to be located in physical server. if we are using the common gateway, how soon the data will be reflecting  in the report/dashboard...? (it means the n/w latency and cloud integration of the gateway).

3. What is the general idea about, if data is one place (located in organization physical server) and if gateway will be located in the Cloud server...?

 

pls. clarify the above and if anything more related this, knidly share the article's with the above details.