Kyle on Twitter: "Btw the DRAM isn't recognized in Mystic Light. I'd try installing the version of Mystic Light for this model of motherboard, but that's not available on their site either.
G.SKILL Announces Trident Z Neo DDR4 Memory Series for AMD Ryzen 3000 & X570 Platform-G.SKILL International Enterprise Co., Ltd.
msi mystic light linux Posts - RedMob.cc
OVERCLOCK WORKS / G.Skill F4-3800C18D-16GTZN (DDR4-3800 CL18 8GB×2)