That's weird. My homegroup is just fine and PowerDVD works. I have three Win 10 machines. The one difference is that I did clean installs with full 1709 version of win 10. I didn't use the update process.
I installed Linux Mint, Installed the Nightly build of Kodi 18 and now there is no oversaturation, no banding and the color is normal with no dark or washed out image. Can you give me any advice on getting HDR now?