App takes more than a minute to load for the first time

I have completed an app in SAPUI5 & deployed in FLP. It takes more than a minute to load for the first time after which it takes only 2 to 3 seconds.

When I run Performance in Chrome console, it shows scripting takes too much time. How can I reduce my app's initial loading time?

index.html

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Orders</title>
    <script id="sap-ui-bootstrap"
      src="/sap/public/bc/ui5_ui5/1/resources/sap-ui-core.js"
      data-sap-ui-libs="sap.m, sap.ui.core"
      data-sap-ui-theme="sap_belize"
      data-sap-ui-bindingSyntax="complex"
      data-sap-ui-compatVersion="edge"
      data-sap-ui-preload="async"
      data-sap-ui-resourceroots='{"orders": "."}'
    ></script>
    <script>
      sap.ui.getCore().attachInit(function () {
        sap.ui.require([
          "sap/m/Shell",
          "sap/ui/core/ComponentContainer"
        ], function (Shell, ComponentContainer) {
          new Shell({
            app: new ComponentContainer({
              height : "100%",
              name : "orders"
            })
          }).placeAt("content");
        });
      });
    </script>
  </head>
  <body class="sapUiBody" id="content">
  </body>
</html>

Controller Modules

sap.ui.define([
  "./BaseController",
  "sap/ui/model/json/JSONModel",
  "sap/ui/core/routing/History",
  "../model/formatter",
  "sap/ui/model/Filter",
  "sap/ui/model/FilterOperator",
  "sap/m/MessageToast"
], function(BaseController, JSONModel, /* ... */) { /*... */ }));

XML Namespaces

<mvc:View
  xmlns:mvc="sap.ui.core.mvc"
  xmlns="sap.m"
  xmlns:semantic="sap.m.semantic"
  xmlns:core="sap.ui.core"
  xmlns:table="sap.ui.table"
  xmlns:smartTable="sap.ui.comp.smarttable"
  xmlns:customData="http://schemas.sap.com/sapui5/extension/sap.ui.core.CustomData/1"
  controllerName="orders.controller.Worklist"
>
  <!-- ... -->
</mvc:View>

Solution

Component Preload file helps in increasing your app performance in intial load. You can create this file easily, for example, from SAP Web IDE: right click on the project → Build → Build Project to create / update the preload file.