The cpu load of this coin although high is not a bad thing as long as it is common to all the mining software. It is because of how the design of the algorithm was made. Stability is the main concern. Specially for rigs that cannot run another mining software like claymore to separate the gpu and manage the load from the cpu. The limitations actually offer better decentralization as most cannot run high gpu count mining rigs. It will also help fend of asic miners as the requirement is much more than other algo. A tweak here and there for better performance or lower consumption and more stability is what is needed.