Forgot to mention that its like 5fps because its high resolution 2560x1440 with voxel size of 2 haha, used matinee to render it out 
wanted to see how it would look, however by making the voxel size bigger (7) and at 1080p i get like 25-30fps (directx11) and it still looks nice, just a bit lower quality in the reflections.
Also it was using the temporal AA for Diffuse
Specs are
AMD FX 8120 @ 4Ghz
AMD R9 390 G1 8GB GPU
32GB Ram
Windows 10