Inbuilt motion sensors turning off straight away

[Bruskey]

Hi. Im using the 810a camera and have recently upgraded to the latest firmware on the reolink site. v3.0.0.494
Previously i was using a template sensor to extract the person detection attribute from the main detection entity. This was working fine, and when person was detected, it would switch to "on" and would stay on until the person leaves. Since upgrade to the latest firmware, im not able to get the template sensor to work, so i looked at using the inbuilt individual sensors which now appear as part of the latest HACS versions. What i am struggling with is when a person is detected, it switches to "detected" for a few seconds then changes to clear, even though i am standing in front of the camera and moving around, After a random period of time, it will change back to detected, then change back to clear almost straight away. This is not good for automations that are using the state change to identify a person motion event, if the same event is triggering multiple "detected" / "clear" / "detected events. What do i need to do to get the person sensor to stay "detected" whilst there is a person in the view moving?