we have the exact same laptop and problem, the only difference is i have updated the bios to FA506IU.313 and still have the problem :/
Sorry for both your shared issues with this model laptop.
I highly suggest you talk to Asus support about the problems as if it is something they can't fix and needs to be addressed by AMD they will have far more influence getting it done.
You are only talking to people like you in these USER TO USER forums, as explained in the forum header links.
Nobody from driver development will see your posted issue.
These are the only ways to notify AMD:
In Radeon Settings there is a Bug Report tool too you can submit the issue or
You can contact AMD support here: https://www.amd.com/en/support/contact-email-form
At least you make others aware of this issue with this model here so thanks.