By default ccminer sets number of thread according to count of GPUs. I also had experiment with param -d N (where N is coma separeted # of GPGU). Found that only 4 GPU works perfect on 600kH/s. If I had tried add 5th card - the hash rate of each cards decries to 470 . May be it is a luck of RAM, CPU or HDD (I have used usb flash 3.0)?
This is ETN mining guide thread. ETN uses Cryptonight algo, and you're trying to mine Neoscrypt. That's why Mattthev said that you're in the wrong thread your question isn't related to this one in any way.