I have HDW4231EM connected to Dahua NVR 5216. The motion detection videos are marked correctly (well almost correctly). Some times the motion detection marker is after a fraction of a second. For example, if a motion is detected because of switching on a light, the fraction of second where the scene goes from dark to bright is missed by the marker. The marker is set almost a fraction of second after the scene has become bright. Is there a way I can change that?