Streaming clarification

[BoyScout]

Sorry,
But for those that only use roon as a source (my case) what´s the best set up?
I don´t listen from any other format. Simple system, Tidal via roon to Dev straight to my ears, but i´d like to optimize the way i´m listenning too.
David, i saw the setup you mentioned from roon forum but, unless you tell me the opposite, looks unnecessary in my case.
Thanks.

David,
You were once again a huge help.
I'll do what you advised me.
I have an ethernet connection, and so far I've only tested between Roon Ready and Devialet Air and I definitely prefer Devialet Air as it's a bit sharper and more detailed. But these are options taken in Devialet's source and i want to optimize the set up in Roon.
I have audioquest eth cables and an innuos mini needing to be replaced with a more suitable one, I'm also thinking about a better switch, etheRegen perhaps, but one thing at a time and for now I just want the right setup on the Roon.

There are three options:
Decoder only,
Renderer only,
Decoder + renderer.
Wich one?

Thanks again, David. I will report later.