Dang, I was hoping someone had a clue because Google support doesn't. I wasted an hour last night while they told me first, it looked great. 940Mbps down and 113Mbps upload on a symmetrical gigabit connection is great? Then it was because I was too near a microwave (not), blamed it on the weather (!), or told me it was because I had so many devices attached. 52 is too many when about 48 of them are light bulbs and other smart home devices that use almost no bandwidth? It advertises up to 100 devices per point, and I have a 3 point network.
The poor rep kept putting me on hold for a couple of minutes while he obviously was asking for ideas, because he'd come back with another ridiculous suggestion every time.
Finally I thanked him for trying and opened a return. I thought I was upgrading my 4 year old Orbi system, not crippling my network. But the Orbi always gave me basically 940/940, the reason I changed is because one satellite was starting to act funky, losing connection fairly frequently after years of being rock solid.
Oh well, gonna try a different maker and see what happens.
