Sorry, to be honest I sort of lost the plot when the subject matter got into multiple routers, extenders, two modems, etc.
wifi at the best of times is always more maintenance than Ethernet which is always preferred if possible. Plus the fact that the thread was being ably attended to.
personally I’d would have done one of two things - gut all the hardware, reset them all and start from scratch with just the bare bones, as in, one modem/router.
which leads to the next option, if that didn’t cut the mustard, get a high end modem with PoE ports and a wireless access point, like the Ubiquity UniFi series.
wifi at the best of times is always more maintenance than Ethernet which is always preferred if possible. Plus the fact that the thread was being ably attended to.
personally I’d would have done one of two things - gut all the hardware, reset them all and start from scratch with just the bare bones, as in, one modem/router.
which leads to the next option, if that didn’t cut the mustard, get a high end modem with PoE ports and a wireless access point, like the Ubiquity UniFi series.