I'm having the same issue too on both 23.9.2 and 23.9.3. Running a 6750 XT.
Upon boot up and reboot I get a "Default performance tuning settings have been restored due to an unexpected system failure" notification. Of course there has been no unexpected system failures. Regardless of tuning control settings/presets I use it gets reset upon booting/rebooting. Even not touching the settings, ie. leaving it on default, gets the same notification.
Also got the browser freezing and lock-ups like other reported about here:
https://community.amd.com/t5/drivers-software/browser-freezing-lock-ups-and-black-screens-when-brows...
Strangely the freezing and lock-ups have disappeared for the last three days *touch wood*. Still getting the "Default performance tuning settings have been restored" notification, though.
EDIT: You won't believe it but I spoke too soon. Alt+tabbed and got some freezing.