are you using maxmem? do you have the IGPU disabled?
Can you try this version opencl see if its any different
https://drive.google.com/file/d/12klUnrlOsyECEsOSZ1NKMmBrMW--oiEm/view?usp=sharing
I fail loop 4+ if memory unstable, or fabric too high but you are stock so must be something else. Can you try one dimm at a time maybe memory is unstable.
What AGESA are you on?