I did a little more reading on Ryzen Master. There are two modes "Creator Mode" and "Gaming Mode". Gaming mode by default shuts off half the cores to enable "Legacy Mode" (for certain older games like "Dirt", which cannot support more than 10 (?) cores if I remember right, and I was unable to...
Solved. I had to reset RYZEN MASTER where I had set it in 'Gaming Mode' to "auto overclock", I think I had to EXCLUDE MEMORY from the auto overclock (involved a convoluted sequence where I had to clear CMOS (button on back of motherboard), then re-enable the XMP Memory Profile for 3600 mhz...