Do router and ethernet cables affect sound quality?

[wizardofoz (Mr Fix It aka The Wiz)]

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Bad sound quality with Roon [Resolved, Ethernet Switch]

Hi everyone WELL HERE WE GO… As I have previously said, I did try to move my synology to another room without any difference but now I’ve moved it into my basement (where my fiber comes in) and this time connected directly to my router without going through the switch that split the cables to all rooms in the House (as i did earlier). Unlike previous experiments, I have now connected my router and synology to my LPS in the regular power outlet in the basement without the switch but directly i…