If Deezer Spotify YouTube SiriusXM are garbage sources, I am assuming that streaming them through an Nvidia Shield over a ROKU or a Chromecast will not really improve anything, correct?
You have already been told by me and a few others that you would need to upgrade your services to warrant using the Shield.
And you were told that the Shield has a better quality output for that usecase....a ROKU doesn't do HD audio service streaming...especially an ancient ROKU like yours.
If you are not going to get a better source...do nothing. Set up 10 systems in one room if you want.
Once again you are running around in circles.
Honestly, you remind me of the many Autistic Spectrum Disorder clients I had in the last 20 years of my career in mental health. Back and Forth, and Back and Forth with no progress.
We are on ten pages now of trying to make you learn something, and it aint happening.
I'm putting you and this topic on Ignore now...you are wasting vast amounts of my time anyhow.