I have 3 x C225 and 1 x C520 cameras connected to my H500. I keep getting this message on all 4 cameras on the HDMI output of the H500:

Live Stream Paused.

Battery-powered cameras only start mirroring  when an event is
detected. If AI Detection is disabled, mirroring will be deactivated.

None of the cameras are battery powered - they all run on the supplied AC-DC adapter.

The video stream on the Android app is not interrupted while the H500 is saying it is paused. 

I think the duty cycle of off to on is about 50% so the H500 is pretty well unusable which is a pity as I only bought it to monitor my cameras from a spare HDMI monitor. At the moment I spend more time looking at the messages than any useful picture - usually 2 of the 4 are off at any given point in time.

Is this a known issue & will it be fixed with a firmware update?