It's got WPA-"Auto" and WPA2-only modes, so I should have said WPA/WPA2 mode since essentially that's what "Auto" is, and that's what the main IOT subnet uses.
Copy on the VLC.
Copy on the VLC.
You can't enable both WPA+WPA2 on your wifi AP/router?
But I don't think that's the cause of your issue. WPA/WPA2 come into play only when the camera connects to the wlan. Since you say the camera does not disconnect from the network, that can't be the problem.
Try opening the RTSP stream with VLC, watch the video for 5 minutes and see if the camera stops streaming, then report back.