As I said I’ve finally decided to take a look at that and the solution was super simple: disable “anti-lag” option in Adrenaline options for Wow.
Now my game still has some fps drops (which are normal) but they’re smoother, not stuttering my whole game.
Did you clear the AMD shader cache between tests? Because it could be that the anti-lag option didn’t do anything, and after turning it off, you’re now experiencing less drops because the shaders are now compiled, since it’s not their first run.
Doesn’t solve anything unfortunatelly…
The only thing who DOES solve this issue is to use the driver 24.12.1 or older.