I have witnessed a 16 channel Dahua struggle and lock up when 14 of the 16 channels are recording and trying to do a playback, especially if you are latching channels during playback. Kinda a torture test of the NVR but a admin has to know its limits of the equipment because you know the end user will be calling you asking why this POS is doing what its doing. Just Saying and if you are remoting in it will be all bad.