Meteor 1.4.3.2 meteor method result and html rendering is very slow during start and refreshing page

performance
1

I upgraded meteor app from 1.3.4.2 to 1.4.3.2 after deploying to ec2 when access website its HTML rendering is very slow. same thing happening when refreshing the page.

Using meteor 1.4.3.2
Mongo 3.2.4