system
5
I have Win 8.1 with IE 11 as well. When I start IE 11 it takes forever to load a page. I disabled all addons and it works fine. When I enable the add-ons, one by one, Avast is the add-on that is causing the slow down.
In toolbars and extensions there are four (4) instances of Avast! Online security. I have to disable all of them to get IE 11 to work properly.