There are two things you should do with your AngularJS 1.x app before deploying to production to increase your performance.

First we need to disable debugging data.

/* app.js */

yourApp.config(['$compileProvider'], function($compileProvider){

Secondly we should turn on strict-di mode to get performance increases to dependency injection.

<div ng-app="yourApp" ng-strict-di>
  <!-- etc. -->

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