So I have received my 4 th camera today IPC-HDW5541H-AS-PV 5MP WDR IR and added it to the blue iris app 5.1 latest version and my cpu makes a massive jump by just adding this camera to around the 90% to 100% with three cameras its normally around 30-40% I have looked at wiki to reduce cpu and makes little difference any logical reason why it shoots so high?