With browser Google Chrome the main page is completly opened after 30 seconds and if open the console of the browser I see the following advise:

thirdparty.js:5 [Deprecation] Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.
send @ thirdparty.js:5
:8081/commFrame.do Failed to load resource: net::ERR_CONNECTION_TIMED_OUT

The server is published on port 443 and I haven't any advise with Internet Explorer and page is opened faster.

Regards.