Holy crapcicles man, are you running Windows 10? If you are, my humble advice is to FORMAT C:/ drive and try again with Win 7 Pro or even Win 8.1.
The backdoors, shady crap and insidious software that M$ packs in that OS have forever cemented the fact that most likely my next OS will be some flavor of Linux.
I also think you've got some serious issues to deal with on your router and/or firewall and how they are configured.
Sorry about your problems, but honestly it sounds like this is a major PITA from a combination of your OS, your connection/bandwidth/router/firewall and unfortunate circumstances, mostly from your own preconceived notions I'm afraid.