RBS750 iphone/ipad connection issues

[Sabada59]

currently having issues

wifi works well on all other devices but on iphones/ipads connection is spoty and often i have to turn off wifi i have one combo router/modem .

ax4200 

and 3 RBS 750 satellites 

not sure what setting i can fix but it seems to only be on ipads and iphones 

thanks for help

[Phyber]

I have the RBR 750 router and two, hard wired RBS 750 satellites. Mulitple iPhones and iPads (WiFi only), all on their respective current iOS's with no issues. We even use WiFi-C (WiFi Calling) with zero problems. M1 MacBook Pro is fine with WiFi as well. Reset Network Settings maybe on the Apple devices? 

How many concurrent devices are using WiFi? We have two home theater systems (downstairs and upstairs) but all of their components are hard wired so the only devices that use WiFi our the iPhones/iPads/laptops and our IoT devices.