Nice work. I only have a small problem since I updated to krypton. I have a dvd/hdd combo like this one -> USB Portable DVD/CD Writer and HDD All-In-One Combo
But when there is a cd in the tray, the hdd doesn't mount anymore. Strange as it wasn't a problem on Jarvis. I got to investigate it further, maybe it's a hardware problem that occured on the same time I upgraded to Krypton.
As I had to much issues with the 30/08 build, I tried the latest build of Demetris (just burn it to sd and added Balbes S805_autoscript). Boots fine and everything works, even my dvd/hdd combo. So something should probably be wrong in Balbes150 image.
Regarding the cpu, in Demetris image I have also constantely 1 cpu at 100%.