If the problem is your network, wiring everything with Ethernet will definitely help. No need for a dedicated switch, I think (unless you host a major torrent server 
), the bandwidth required for audio is nothing compared to the Ethernet capacity. Well, actually, Wi-Fi and PLC bandwidth are also over the top, but Ethernet gives you both low latency and high robustness (no interference here). This being said, it looks like there is a specific issue with the optical input in particular, so maybe the network improvements won’t help in your case. Try wiring everything with your existing switch, to start.
), the bandwidth required for audio is nothing compared to the Ethernet capacity. Well, actually, Wi-Fi and PLC bandwidth are also over the top, but Ethernet gives you both low latency and high robustness (no interference here). This being said, it looks like there is a specific issue with the optical input in particular, so maybe the network improvements won’t help in your case. Try wiring everything with your existing switch, to start.
