What display settings do you have set in the shield? I’m getting opposite results. Especially playback of my own hdr content. You have hdr10 files you tested? Ai enhanced doesn’t work with 4k content just 1080p upscale to 4k. Are you leaving your kodi set to 4k then and not having your tv do the upscaling? Setting the kodi settings to 1080p and checking all the options in the white list would have the tv do the upscaling.I have both the ATV4K and the new 2019 Shield.
I compare image quality Kodi vs infuse and for both my blu ray rip and my 4k rip, all 1:1 rip, I prefer the Kodi image. I think the new AI processing on the Shield really is a game changer. The older Shield was a great product but now with AI the new 2019 eat at the same table as other high quality image media player.
Before the Shield, I use ATV4K, a Zappiti player and a FireStick. I also have own a Zidoo, a Dune and many other players. After my test, I sold all my other players and just keep the new Shield.
This new 2019 little box can do all my streaming with top quality Dolby Vision / Atmos and can play my 1:1 rip with great image quality. It’s about time a all-in-one « no compromise » solution exist.
The new Shield still need a firmware or two, but I think it will soon be THE box to have in our ring. And for my part, the price they ask for all that is ridiculously cheap compare to what I pay in all other media box I own.