I recently swapped a Cisco 2960 out and put in a Netgear GS105E powered by a iFi power supply, and was very surprised to find a significant improvement in audio quality from the 272 (still connected by the same Cat6 UTP that I’b previously found suited my system). Quality improvements became most noticeable after I set the port priority for the streamer and the WiFi connection to ‘high’ and the NAS to ‘medium’, and enables cable power management on all ports.
There was more clarity and focus in the upper mid range that benefited metallic percussion and most particularly readability of female vocals.
A surprise, but a pleasant one.
One thing to note is that I run a separate WAP which also does the DHCP, my ‘router’ only takes the traffic for the internet connection.