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){
  $compileProvider.debugInfoEnabled(false);
}]);

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

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

Related External Links:

• AngularJS Docs - Production