Original pi zero with usb Ethernet also runs fine
FWIW, that was also an initial concern of mine. Almost three years later, i've never once had an issue with running my pi-hole over wifi.
on good wifi with no interference you can get good 2ms avg and 0.2-0.4 ms SD ping distribution.
ethernet will have 0.2 ms avg and 0.01 SD
it's the outliers that will cause headaches, when there is radio interference.
wifi is a dynamic system with every base station migrating bands for interference.
i opine that there's no _functional_ difference between those speeds for purposes of a home LAN. Both values are far below humans' ability to perceive the difference.
I mostly used USB as an experiment and I didn't know what else to do with the regular-zero
Very cool how a $5 board could work so well! I was glad to see your post.