Get your baseline in order ..
Make sure your motherboard's BIOS is up to date
Make sure you have the latest AM4 chipset drivers installed from AMD.com
What power supply make/model are you running? how old is it?
What speed is your RAM running at? IF XMP/DOCP is enabled, have you tested with it disabled?
How are the health of your system's drives?
What errors are showing in your systems Event Viewer?