I have gigabit internet (downstream only... hoping for fiber one day for symmetric up/down), and I run wired gigabit ethernet for desktops and fixed devices to free up the wifi. For 99% everyday use it works just fine. Externally I hit 80+ MB/s on internet download (aggregate, very few sites saturate my downstream bandwidth), and internally I hit 90+ MB/s to and from my NAS. The only time I wish it was faster is when transferring really large files to/from the NAS, but only for 10GB+, so the extra cost of either SFP+ or copper 2.5/5/10G upgrade to the network is not really warranted. One day I might install a NVME cache on my NAS and run a straight 10G fiber from my workstation to the NAS, but that's more of a luxury (look I can transfer 10GB file in 10 sec instead of 100 sec!) than need.