My Gigabyte B450 and ryzen 5 2400g works just fine after new install of windows 10 and followed by amd chipset. After that, I install storeMi (latest ver), and the workload on one of the core is 90-100% after restarting.
I did reinstall windows 2x, just to make sure it is storeMi driver which is the problem.
Currently I run win 10 with amd chipset with no issue, without storeMi for sure.