There is an issue with #50 (Signatum - AMD Only).
I am running the nVidia version on my nVidia rig just fine, but on the AMD rig (RX580's) running the SGminer (AMD) version, it only sees the onboard Intel Graphics GPU, and pegs the CPU. It doesn't use the AMD cards???
I ended up having to add: --gpu-platform 1
to the command line in the .bat file for the AMD version.
Working now!