With modern Wi-Fi the issue isn’t really latency, it’s jitter. Most of my only moderately tech savvy friends have mesh setups that they don’t find fault with, but were also significantly more expensive than my cobbled together setup. From what I understand, my Aruba IAPs can also be configured in mesh mode so only one of them actually needs a router connection, but it was easier to just run a second CAT6 cable through my attic.