All kinds of troubles after latest firmware update

As promised, an update on progress or lack thereof: I have restored to factory and re-set all operating parameters of the ORBI as suggested as the initial step. The Spectrum modem provided info is on the attached photo. The ORBI is operating in router mode. The Ethernet switch (hub?) information is in the attached photo. The distances between the router and satellites is 24 feet and 38 feet. The house is an open floor plan, there is only one standard Sheetrock wall between either satellite and the router. These positions have worked well since the system was installed a couple years ago. I am on channel 11 for the 2.4ghz channel selection, and the 5ghz is on channel 48. The two nearest WiFi neighbors are more than 100-125 feet away. The rest are much farther, hundreds of feet. We have larger than average lot sizes here. I’ve disabled daisy chain topology (it was enabled). I’ve enabled MIMO, beam forming and WMM. After two calls to Spectrum, they are again sending a tech this afternoon because remotely they see some “signal issue” which they don’t elaborate on. I will update again after the tech comes and waves his magic wand later this afternoon.