Hi Richard,
I have just updated my NVR DS-7616NI-I2/16P to version 4.1.50 and can only see 3 out of 4 on the 2x2 view, each time i click in to the live view and go back then another one disappears. I'm using 4 DS-2CD2385FWD-I Turret cameras.
I can still see the information when hovering over...