Payload race condition

adapters.product.js

import DS from 'ember-data';

export default DS.RESTAdapter.extend({

  buildURL() {
    return 'https://products.dollarshaveclub.com/cms/edge/v3/products.json';
  },
  
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

models.product.js

import Model from "ember-data/model";
import attr from "ember-data/attr";
import { belongsTo, hasMany } from "ember-data/relationships";

export default Model.extend({
  name: attr('string'),
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  
  model() {
    const start = performance.now();
    const promise = this.get('store').findAll('product');
    promise.then(() => {
      const end = performance.now();
      console.log(`findAll: ${(end - start).toFixed(2)} ms`); 
    });
    return promise;
	},

});

serializers.product.js

import DS from 'ember-data';

export default DS.RESTSerializer.extend({

  normalizeResponse(...args) {
    const start = performance.now();
    const result = this._super(...args);
    const end = performance.now();
    console.log(`normalizeResponse: ${(end - start).toFixed(2)} ms`);
    return result;
  },

});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>

{{outlet}}

<ul>
{{#each model as |product|}}
  <li>{{product.name}}</li>
{{/each}}
</ul>

twiddle.json

{
  "version": "0.10.6",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.9.0",
    "ember-data": "2.9.0",
    "ember-template-compiler": "2.9.0",
    "ember-testing": "2.9.0"
  },
  "addons": {}
}