Got the RT-AX88U Pro which seemed to solve my problem. As a non-programmer I'm not sure that my problem wasn't solvable another way but this worked for me. Many thanks.What is 'lots of clients' (wireless) for you?
Is that 3,000 SqFt on a single floor? If it is, don't count it so. WiFi RF radiates in 3D.
The RT-AX88U Pro or the GT-AX6000 are your best bang for the buck buys today (with the former considered to be the better option, today).
Bob