Has any one checked the registry files comparing Windows 10 clean install versus Windows 10 upgrade. If Microsoft has discovered the solution of extracting minimum registry file entries from a Windows 7 installation during a Windows 10 upgrade; then kudos to Microsoft.
Now what Microsoft needs is to improve the uninstaller to maintain a "clean" registry and not a bloated registry.
One little hitch. If you upgrade windows 7 to windows 10. You won't be able to use Windows 7 on another primary partition. I found out windows 10 upgrade doesn't replace the windows 7 boot loader. It keeps the Windows 7 boot loader.
bloat doesn't/will not, affect the registry in anyway ,that will affect the workings of windows ,to the best of my knowledge
I remeber reading both cases that bloat doesn't hurt Windows and yes bloat does hurt the speed of Windows.
What is causing Windows to slow down if it isn't bloat? A clean install brings Windows back to full speed and seems quicker even after installing all of your apps.
uninstallers" that can be downloaded and used to successfully clean up remnants which blocked re-installation.