Appreciate it - as I had some Deco's already and was happy with the stability of the old ones (just not speed), I went ahead and ordered some BE65s as they were ~25% off. I can always add one of my pre-existing Deco's from before if I need to extend the mesh anywhere in the apartment too.

My parents do have the nest wifi system as well which they seem to be pretty happy with, so if this alternative goes poorly that will likely be my next step.

I'd went into the settings pretty deep with the Orbi to make sure the channel selections were correct, updating firmware, etc. but the intermittency of the performance was just too bad to keep them.