Hey Kevin,
I know It's been a while since your question but I'm struggling with the same issues too.
However, I've found some diagnoses that do work:
Update your BIOS
Download amd Adrenaline software, it has a lot of useful updates, especially graphics.
re-install all your drivers
plug out any external hardware and see if it persists
make sure Windows is up to date
uninstall ryzen master if you have it, it causes troubles sometimes.
turn off overclocking and check
run ram diagnostic
graphics up to date is really important
Hopefully, it helps if you haven't found a solution yet.