Because access points (at least the TPLink ones I've seen) can't be part of a mesh network. So no roaming between nodes and when the signal from multiple devices overlap, wifi can start to become a...

@David-TP thank you so much for your feedback regarding WPA3 support for this unit. Is easymesh also planned for implementation? (even if there is currently no date?)

TPLink's RE500X is listed as planned for WPA3 support. Is there any timeframe for this firmware release?