I imported a fulldetail OBJ.file from zbrush to maya,which contained over 1 miljon polygons, just to see if it would work, and it did .
Maya went a bit slow after that:p , but it managed.
i've made some quick eyes(I imported the obj into a new scene).

I still seem to have a problem with the displacementmap function from zbrush to photoshop.
I seem to be getting an additional bump because of some colorvariation on the background color.
I've tried setting the dpi of the photoshop image from 75 to 300, turned off colormanagement, set the image back to 8 bit and set it from greyscale to rgb.
So if anyone knows what's going on here, his or her input would be much appreciated here