(Deco X60) Speeds are unstable, IPv6 simply doesn't work, the web interface is a joke, won't allow LAN address as DNS and finally it won't update to the latest firmware now. Everything is just "dumbed

I recently switched from a Netgear Orbi RBR50 which had zero IPv6 issues. I have enabled IPv6 and the main unit gets IPv6 address, but none of the LAN devices get an IPv6 address. Any ideas on how to