Has your ASRock motherboard the latest BIOS version installed?
BSODs still happen with all default settings in BIOS?
Have you installed any version of AMD Chipset Drivers? if yes, which version? from AMD website support or from ASRock website support?
Which version of Windows 10 have you installed? 1803 Build 17134.345 or 1809 Build 17763.55? is already updated?
Have you checked the health of Windows File System with DISM and SFC tools?
Have you inconveniences to uninstall AMD Ryzen Master?