Hmm.. I'm not a Mesh expert, @Riley1 , but I'll be sure to ask some team members who are so we get you the right answer! However, what is your garage made out of? Is it possible that is causing some sort of interference? -60 & -70 are pretty high RSSI... is it possible it is bouncing networks as well? Let me know! Thanks!
Hey @Riley1, I'd be happy to chime in for Jennifer here. This is a neighbor to neighbor support forum rather than a direct line to our support team, but I'd be happy to offer some guidance here. You mentioned a few times that the Ring Cameras are being moved from the closer Google access points to the main hub of the mesh system. This is not something that the Cameras are doing on their end, but rather the mesh system itself is redirecting traffic. You'll likely be able to adjust some settings on your mesh network to keep the Cameras connected to only one access point that provides the best signal for them.
I hate to say this since there are so many Fan-people of Google but their devices including their network devices seem to be more...centered on their own hardware and not as open/workable for other companies devices especially those that are competitors. Apple network devices seem to have this issue as well. I prefer to use network devices from a network specific companies like Linksys, Netgear, TP-Link, etc. I have camera's running in the -54 to -56db ranges and they seem to be okay not perfect but good enough. Linksys makes a mesh router but it is not super cheap, but the extenders can be gotten from Amazon used fairly cheap. Before anyone jumps on me about Linksys possible Fanboy status I have had Linksys devices since they first came out. I have also worked on Cisco, very expensive very hard to learn, and Netgear easy to work like Linksys.