It sounds like you have been experiencing some frustrating issues with your GPU driver. It is possible that the white screen flashes you are seeing could be related to the driver update, although it is difficult to say for sure without more information.
One possible solution to try would be to roll back to a previous version of the driver that was working for you before the update to 23.2.1. You could also try doing a complete uninstall of the current driver using the AMD driver removal program and then reinstalling an older version.
If you continue to experience issues, it may be helpful to contact AMD support or seek assistance from a computer technician who is experienced in troubleshooting these types of issues. They may be able to help you pinpoint the root cause of the problem and find a solution.
It is also worth noting that some users have reported similar issues with AMD drivers and Windows 11, so it is possible that this is a larger issue that will require a fix from AMD or Microsoft. In the meantime, it may be worth keeping an eye out for any updates or patches that address these issues.