If it helps anyone ... one factor is, you really need a good router. Consider just rolling to bestbuy and getting a new top of line router, it's a cost of business :/
Certainly, there can be cert problems etc. But it is really much smoother with the newest possible router.
It may even sound silly but be sure to have proper modern cat8 ethernet cables for your jumpers (eg, from fiber modem or whatever to router to switch and to your appleTVs)
I've really found that pairing only works solidly if you have a really new router and everything in ideal condition. Routers are constantly slightly changing in subtleties of the specification and versions.
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Developer Tools & Services
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Xcode
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