If you are having issues like you mention, I would go the DDU route to cleanly wipe all drivers, then install the new version to eliminate the possibility that some old amd driver is left over. Also, you want to turn off hardware updates in windows (which i think you can only do with the pro version), so that windows does not automatically install the latest after rebooting and before installing the intended driver version.
What version of win 10 are you running? You can get that by running "winver".