No 4k transcode options?

I’m really at a loss here. I’m watching a high bitrate film over my T-Mobile home internet and it’s struggling. Original is showing 55mbit but there’s no other 4k options. All I have is 1080p and less. How do I get my other 4k options back?

Also I had the option of transcoding with HEVC and I don’t see any of these advanced options anywhere. Why take that away and why get rid of the drop down menu on the ATV?

Should at least have the option to go back to the old app. How do I get. More transcode options.