Yeah after doing a bunch of testing what I settled on was a used ThinkCentre Tiny with a dual 10G NIC running OpenWRT, and then a cheap Chinese PoE switch with 4x2.5G ports and 2x10G SFP+ ports. Router and my main computer on 10G, NAS and Wi-Fi (UniFi AP that I’ve had since before) on 2.5G, and then everything else is on a separate 1G switch.

For a home network, 2.5G LAN is really the sweet spot. The hardware is affordable now, the spinny drives in my NAS can’t realistically do more than 200 MB/s for a real workload, there are no single-stream downloads online that are going to be faster (the fastest “normal” download I’ve seen is 2Gbit from Microsoft)