@robimarko I can reproduce the ath11k radio crash by creating two "common" SSIDs with WPA2-PSK, let's call them A and B.
When I use my Windows client (Intel AX210 NGBW PCIe Wireless Card) to connect to A, all is fine. When I stay on A also. When I select SSID "B" and connect to it, the radio driver crashes reproducibly.
It doesn't matter if I switch the Windows client from SSID A to B or vice versa.
Staying on one SSID since boot up does not trigger any problems and ath11k works fine "forever" on my AX3600.