CBX ,
The higher cpu utilization you noticed, is that with face recognition and/or plane traversal, on or off? All my cameras are at 5.1.6 and I have noticed more sluggishness in the menu pages but I have yet to use either of those new features. Also is your busybox for the hikvision cameras still available for download? I want to work on the RTSP feed for compatibility with Honeywell's Tuxedo Touch Panel.
Steve