Just updated to 4.3.3.1 and my CPU has dropped from over 45% to 29-33%. I have 10x Hikvision 3MP running at 10fps and no HW acceleration. I have to say that is a great improvement. The lowest it has been since having these 10 cameras connected.
These are running on an I7-3770k
These are running on an I7-3770k