fluency

Hi Everyone, I have 6 Hikvision cameras. 3 have FW V5.2.3 and 3 have V5.2.5. The NVR has V3.0.10. Problem is: When using the iVMS app I cant choose fluent mode for the streams on all but one of the cameras. The only options available is Clear (Main Stream) and Custom (Editing the main stream.)...