AMD 5800X3D performance

hey folks !
I’ve just got a 5800X3D coming from a 3200G and the difference is quite huge.
BUT
im still underperforming on cinebench where i get around 1100 on single core and 8200 on multi core (which is less than how it should perform).

XMP on and -30 on all cores using PBO

Any help with that ?