Whenever I walk or run the screen just gets flooded with ghosting. I assume that's because of the 30 fps cap.

Can anything be done about that? It would be nice to be able to walk and have a clear picture at the same time.

 

I'm using a i5 4670k and a GTX 780.

You assume wrong. 30FPS cap wouldn't cause "ghosting", unless your definition of the word is wrong and you're thinking of something else.

Make sure you have the latest drivers. Running perfectly 1680@120hz on w8.1 64bit, q6600, gtx470 334.89. Also check your res/hz in options.

 

Actually the game runs glitchlessly constant 30fps even in P12 idle power state.