Possibly that number of cameras and their combined resolutions are exceeding the bandwidth capability of the DVR.
What happens if you disable/unplug 4 of the analog cameras or 2 of the IP cameras?
10-12 1MP - 2MP analogue hdtv cameras (I don't know the exact number) and two 4MP IP cameras are connected to the recorder.
As it was a problem to connect IP cameras to 5 recorders, I used two nvrs to which I connected IP cameras using /Streaming/Channels/1701 and /Streaming/Channels/1801.
One of those two nvrs (192.168.5.133) may be causing the problem: User has modified to system time. Attached: photos
How can I turn this off, disable...