Problem with large number of markers on the map

Question

I am working on an Android app that already exists on iPhone.

In the app, there is a Map activity that has (I counted) around 800 markers in four groups marked by dr

Answer 1

I am having same problem in multiple marker loading on map but I have put some delay in loading marker and display map.first display map and after some delay will load all marker. that will load faster up to some extent.