Ok, I did a little more testing with my LG OLE65BA7 TV. I took pictures of the screen. Here is what I took:
1. Xbox Youtube app
2. Roku Youtube app
3. TV Youtube app
4. Netflix network test
The end result is, I don't know if I trust the stats for nerds to really say what is going on. Summary:
Even though Netflix says I am getting 221 Mbps on network test (my ISP is supposed to be 200Mbps so I believe that number) and Xbox Youtube says it is getting 153Mbps connection speed while playing the video, Roku says it is only getting 45Mbps. And TV app says it is getting 64Mbps. And Xbox says ZERO network activity?
Xbox is only one that says viewport and display are 4k.
Maybe that drop in speed is because it is doing the upscaling? And that takes away from overall throughput? But, again, it LOOKS great.
So I think I was remembering the 4k viewport and display from the Xbox and the others said they were doing 4k so I assumed it was.
Don't know if any of this is any help, or it is just confirming what you were complaining about in the first post.
p.s.
After posting, I finally noticed the paper clip icon for adding "other media" and I've included them here. Don't know if the upload process changes resolution of attachments.