Guys, our Algo is not easy. We're improving mining and create an Asic resistant coin even to new Antminer was not an easy task but we did. That's why you can't mine it using regular nhequiminer.
There's also a penalization Algo depending from the total power. If you want to maximize it, uses at 75% of the total power and you get the maximum result. If you use all cores it's easy you get fewer results.
Also, the difference in mining using Cpu and Gpu is not so high using Equihash. It is not more than 30-35%, so is less relevant despite other algorithms.