R9 380 - GPU usage throttles up and down, stuttering and extremely bad performance

PythonHaxor

Reputable
Jan 23, 2016
2
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4,510
So I bought this graphics card very recently and so far I'm very disappointed. My older card (gtx 560) has been performing better than my new one. I'm now playing GTA V at 30-40 fps on medium settings, actually pretty much no matter what settings in the game I change the fps stays the same. Fallout 4 is stuttering like crazy on medium settings and fps is around 25 in the cities and 60 out in the wilderness.

GPU usage is going wild while i'm playing, pic (GTA V gameplay):
http://i.imgur.com/TVxVi8y.png
Temp is still stable though.

I have tried different AMD drivers, old and new ones, doesn't really make any difference.
Anyone knows what's going on here? I'm pretty sure the performance isn't supposed to be this bad. Is the card maybe defect? Or is my CPU just bottlenecking?

Specs:
CPU: Intel(R) Core(TM) i5-3570 CPU @ 3.40GHz (4 CPUs), ~3.4GHz
RAM: 8192MB RAM
GPU: AMD Radeon (TM) R9 380 Series (the XFX version)
PSU: 500W (all voltage levels are stable)

DxDiag:
http://txt.do/5zvcg