Shadows: Huge Performance Hog?

[v1ctor]

I was hoping that this would be fixed in the release version, but for some reason shadows are still a huge performance hog. I'm talking 20fps and more in certain situations and that's with a HD7970 GHZ 3GB (catalyst 13.3 beta), the second fastest single GPU card out there...

Has anyone else experienced similar performance issues with shadows set to enabled? GPU utilization is sitting at about 60% most of the time so I assume it's either a bug or poorly optimized.

[iBones]

I imagine the issue would be where their other game fell short...
CPU optimization. Rift always had and still has HUGE issues with utilizing your CPU. GTX 580 lightning here, and Rift runs like crap compared to much more demanding games.

[TH3STEVE]

I'm running everything on High and haven't experienced any performance issues. Nvidia GTX 670.

[MentalFloss]

I have everything on high (no proper customisation >.<) and it runs at a constant 60 fps. I also have a HD 7970 but I'm using an older driver version.