ORBI RBR50 DHCP loading

I have a RBR50 with 2 RBS Satellites running V2.7.4.24 Firmware in an multi OS environment, Windows 10, MacOS Monterey, IOS and Android.  Currently 47 devices connected to the system at all times with upto 64 specific devices that may connect at any one time over a period of a month, when my immediate family members visit.

Periodically, once per month, I found the need to reboot the router as my connectivity would slow down while streaming.  Afterwords things were fine for another month. 

More recently I ran into a problem with my Roborock E5 Mop Robot Vacuum, where it's connectivity would decline over night. I would reboot it and it would connect and run until the next day.  The app to control it has a network diagnostic that displays signal strength, RSSI and packet loss.  Packet loss after rebooting would be 0, but the next day it would be 49%, with signal strength at 98%.  I spent a couple of weeks working with the mfg, trying to resolve the issue, with no resolution.  By the way, the Roborock parks 8 feet from the RBR50.

What I did that seemed to resolve the issue was reduce the number of devices that would have IP's assigned by DHCP, currently at 2.  Since doing that I haven't had packet loss issues for the last two weeks.  I don't know if I solved the issue, there is no way for users to see resource utilization on the Orbi so I have no means of validating that what I have done, has had any real impact. All current Orbi products emphasize that systems are limited by number of high performance, high data rate devices, nothing to do with the system managing the number of devices connected by DHCP.  I have seen that others have had issues with DHCP with previous verstions of the firmware but have since been resolved. 

I've also read the issues people have had with IOS connectivity, which I have never experienced, though I had not read this before I manually defined all of my IP addresses.  So I have not tried the solutions that FURRYe38  has defined.

My network is tied to Spectrum 500/20 Mbps, using a Hitron E31N2V1 modem.  The house is 3300 sq ft, single story.  The satellites are 50-60 feet from the main router with at best 3 interior walls separation from the main router.  (It sure would be nice if the Orbi app had a means of measuring the signal strength of the backbone radio between two Orbi devices.)  On my Samsung S7 phone I have an app, "Wifi Analyzer", version 3.11.2, that can give you a measurement of the 2.4/5 GHz WiFi signals and from the main router the satellites come in from -65 to -80 db.  My nearest neighbor has 2 WiFi SSID's that come in from -85 to -100 db.  Other neighbors are visible from the satellites but not the main router.

I use WPA2 and AES only, 2.4 GHz is set as auto but currently uses channel 6 and the 5GHz is defined as channel 48.

Power is set at 100% on both frequencies. 

20/40MHz coexistence is enabled. 

Preamble mode is automatic.

CTS/RTS is at default values of 2347.

Implicit BEAMFORMING is enabled

MU-MIMO is enabled

Fast Roaming is enabled

Daisy chaining was checked, I've unchecked it though I have no need for it atm.

IP addresses are configured as follows:

1-15 for WiFi router/satellites, zibee hubs, NAS, printers and inhouse computers

16-31 DHCP

32-50 Phones, tablets, watches, immediate family laptops

64-87 Media devices, TV, Echos, Firesticks, WiFi cameras

96-103 light switches

120-127 Plugs

Any thoughts would be appreciated.