Just Cause 3 performance

[PiKe]

I'm running my 2500k at 4.4ghz with 16 GB RAM and a 1060 3gb.

It runs at 60fps at 1080p with everything very high, but can drop to as little as 30fps. During this time neither the GPU or CPU are 100%, it seems to be related to the alpha affects but not 100% sure, I struggle to find an area of the map that consistently lowers the frame rate in order to see which settings make any difference.

Any ideas?

 

[PiKe]

That's a shame, I previously played it on PS4 and thought the extra CPU grunt from a PC would help.