How to improve performance of meteor web application

My Meteor application is deployed on aws EC2 large instance with 8gb ram and 50 gb storage using Mup, My application have more than 30 clients, It slows down at any time in a day i.e. pages keeps on loading.

please suggest load balancing techniques for meteor.

It works fine and smooth on local environment, but slows down in production.
I have minimsed subsciptions and loaded minimum ammount of data in all pages.
Application works fine for sometime when instance is restarted.

Source: StackOverflow