4K stream on DTV app on Apple TV is very disappointing

I've been searching far and wide for information related to why the 4K stream from the DTV app on an apple tv is so bad but have found nothing useful.  

I've tried switching the settings to the "recommended settings" called out by the app but it does nothing.  On three TVs with an Apple 4k, when I choose the 4K stream it always looks like its 20 frames per second.  I have a budget TCL, a mid-range Sony, and a powerhouse 85" QLED.  It looks exactly the same on all three and it so disappointing.  

The logical conclusion here is that either the stream from the DTV app is trash or incompatible with Apple Tvs.   4K content from any other source on the apple tv is gorgeous so I'm 100% certain its not all three of my apple tvs.   I end up switching live games from the 4k stream to a 1080p stream on another channel and it amazing in comparison.  

I'm hoping for some input from DTV to let us know when this will be fixed because i'm paying for channels that look worse than their 1080p counterparts.