CodeIgniter 3.1.4-3.1.5 HTTP Session issue

This could also be some external resource you are trying to load in 3.1.5.
Like some external JS, font files, css. The browser will wait for them to finish downloading even when the main request is already visiable on the screen.

In chrome tool use the "Network" tab to see t¡what the browser is waiting for.

On the package it said needs Windows 7 or better. So I installed Linux.