Just because a game is top down view, doesn't mean it stops rendering 3D stuff.
Both games are rendering 3D worlds. With the big diference that open areas in DG3 look good, while Starfield looks like crap, while running like crap.
Yes, Starfield indoors in pretty, but indoors is doesn't hammer the CPU.
No, the 5800X3D it is not power limited in games. It never is.
The limit it hits in games is the clock speed of 4.45 Ghz. Always.
Even in heavy plications it never is power limited. It sooner becomes temperature limited, than power limited.
I know that. I tested it extensively with y-cruncher and Prime95 small FFTs, and with undervolting.
Guess what. I can get higher performance in y-cruncher if I power limit the 5800X3D, tweaking EDC, PPT and TDC.