Streaming to outboard DACs - file format issues

Hello,

I recently purchased a Node2i and prefer the qualities of my original Peachtree Audio Dacit over the built-in DAC (bottom end on Dacit is significantly better to my ears). I’m streaming to my DAC via Coax, and from my research the Dacit supports high res file formats via Coax.

However, I’m having trouble streaming high res files from various platforms. For example;

1. AmazonHD: Files won’t play. I can play the simple HD and lower files no problem, but none of the UltraHD play
2. Spotify: All files play
3. Tidal: Even with my settings set to Hifi and not MQA (the Dacit is not MQA compatible), some songs play and others don’t. Anything with a ’masters’ tag is 50/50 playing. This doesn’t make sense to me since I have my settings not to play MQA.

Is this just streaming in general? Are my issues with an older DAC or is it streamer based? I have some time to return the Node2i but would like to know where the issue lies before I do that, or buy a new DAC; is this a streamer or DAC or platform issue?

Thanks for your time,

J