Second: Try to uninstall the AMD driver set using Windows Control Panel - Uninstall. Then use DDU (latest) in safe mode to delete whatever was left over from the Uninstall process using Windows Uninstall. After rebooting, Try reinstalling the Full AMD driver package again.
Also be sure your Windows OS is fully updated via Windows Update.
Read #5 #4
1. Download and save the correct AMD driver. Do not use "automatically detect and install". Download Drivers
2. Download and save DDU https://www.guru3d.com/files-details/display-driver-uninstaller-download.html
3. Disable All anti-virus/anti-malware/anti-anything
4. Delete the contents of the C:/AMD folder of all previous drivers
5. Win10 users..take the necessary steps to prevent/delay Microsoft automatically changing/installing graphics drivers using one of these methods > Windows 10 Forums
Radeon™ RX 400 Series