Are you running the 12.6 driver or the Beta 12.7 ?
Did you try thr 12.7 Beta and see if its better ?
AMD shows as a 12 point
Gigabyte shows as a 8 point version, so its had to say what AMD version is in the driver.
NOTE; I never use drivers from the MFG site ( ie- GIG, ASUS ), as they tend to be so outdated its a joke.