Re: Self Culling Issue

too many display and sketch style tags too judge where the conflict is (in a reasonable amount of time anyway). Judging by your top image I would remove all material and sketch tags, remove the sketch effect in the render settings then start fresh - add sketch again and set the settings so you get the look you want in the sphere and vines and only add sketch style tags to the crystals. The object being to keep it simple, do as much as possible with the main sketch settings and add style tags only where necessary.