WAX630 - connected devices disconnect, "reconnect", cannot pull/renew DHCP without restarting radios

I am not sure if this information can help you but I am struggling since june with WAX620 devices. My network has 3 AP's and 4 VLAN's and I trie a lot and I am searching for weeks and weeks. Netgear support is involved and in my case there was also one device changed for another.

I use Multi-PSK in a simple way to route to 3 VLAN's (the 4th is the management VLAN).

The problems that I experienced where that the AP's did crash and reboot constantly. They did lost the connection with the Insight portal constantly. I did switch to local mangement mode and re configure the 3 AP's manualy. At this moment I am running the latest FW and the problems did come back. When I do connect our Chromecast the AP that it is connected to crashes and rebootes or sometimes I have to cut the power off to reboot the device manualy.

When I connect my Apple Ipad to the WiFi and open my email the same is happening (to another AP).

I decide to make a test WiFi network and link them directly to VLAN10 and I do not use Multi-PSK for that SSID. When I do connect the Ipad (air 4th gen) to that SSID there is no problem and everything is stable.

Before I did this I did also test is with a USB-ethernet adapter an that was also working (just to confirm that it was not related to the rest of my network).

I am not sure if this information will help you with the root cause but I am convinced that there is a Multi-PSK related bu in the latest FW for the WAX device (I have the WAX-620).

Netgear is aware and I did ask them to do research to this problem and give feedback as soon as possible. I am curious if they wild find something.