Well I've got an i7 over clocked and a GTX 980 super clocked. After extensive troubleshooting it seems as though my silent CTD's disappear when I set shadows to low. I'm using K ENB pure light and the official hi res textures.

It's strange I'm capped at 51 fps everywhere in the game with DoF, AO, and stunning grass mods / settings ( the GTX 980 can really render grass ) but anything over low shadows and I crash.

I'll continue to test.