1. The download is taking WAY too long (Over 4000 hours in my case)
Fix: Go to Control Panel, Network and Internet, Internet Settings, Connections Tab, Lan Connections, Un-check "Automatically Check for Settings" This will bump your slow speed up considerably.
2. Something happened that made the installation stop at 99%, it was still red, but it was at 7.60. So, I cancelled the installation to reboot it, possibly making it download correctly. Which unfortunately made me get stuck and 3.99GB.
Fix: Go to whatever folder you downloaded into and delete any install tome with a .PART next to it. These are incomplete and have been confusing the installer. Removing it will force the installer to download a fresh one, allowing you to get past 3.99GB.
Hope this helped guys!