Re: Qliksense application taking some time to open.
I am not clear some points, when you mean " local network all application is opening properly" do you mean when you try in the host server ( https://locahost/hub) hub or apps open fast?
" when I am trying to open over internet." Do you mean when you try on your machine or any end user machine outside the hosting server, hub or apps are slow to open?
If yes, then question is for you, is there anything in the middle between the end user <--> to the host server, like L/B, or any network devices, if you are not sure, then you can try a Tracert command from your machine (https://support.n4l.co.nz/s/article/How-to-use-Tracert-Traceroute) so you can see how many hops and what do you hit, if L/B then try to bypass it and see if the response is the same.
Giuseppe Novello Principal Technical Support Engineer @ Qlik