I bought one of these and have been having issues with motion detection. Nice to find out about the human/vehicle note above as I was also wondering why nothing changed. I am also using a Synology.
What I am seeing is a lot of false detects almost every 2-3 minutes when using the camera motion detection settings. I see the detect bar on the synology surveillance station top out while there is nothing going on. Tried normal and expert mode. In expert mode, I created 7 zones with different sensitivity levels. While troubleshooting the false detects, I set each zone to 0 sensitivity and still received false detects. Only when I set the motion detect to off on the camera did the synology stop receiving the detects.
Am currently using the synology to set the motion detect conditions, but this takes away all of the camera capabilities such as the white light alarm or siren. Am wondering if anyone else has issues with the synology interface. I troubleshot with Hikvision and they ended up replacing the camera. The replacement does the same thing.
BTW, using the surveillance station preset for this camera. May give ONVIF a try.