I have an RBK13 system (RBR10 is the router - Not available option for model to select on this forum).
All devices connect and work perfectly on this system with 100% signal or close to it. One Amazon Fire HD8 tablet works fine most of the time, but on occassion goes through fits that last an hour or two (Once a day max so far). The signal in WiFi Analytics is 4% signal with anywhere from -36dBm to -51dBm depending on distance away. The trouble tablet is always slightly worse than the other devices, by 0 to -10dBm worse. I want to know what the signal % actually refers to? I am trying to determine the problem with the one tablet. The problem started after the latest OS update to the tablet. Other tablets are similar but newer versions of the Fire HD, and have the same OS update without a problem.
