Hey guys,
I followed the guides that people posted here a lot of times and even tried to make one of my own but none worked for me. PLEASE help.

I made this mushroom in Zbrush, (started from a very low res sphere and going up to 8th subdivision level), and made a displacement map by going to texture>new>height/width 2048>went into the lowest sub level and in the displacement menu I picked adaptive, smoothuv, dpres 2048, and create dismap.
I then exported sub level 4 as OBJ, imported to max, converted to editable poly, checked smoothing iteration 2 (any higher and max crushes when i render), created a texture with 50 dis map, V -1 and output from -1 to 1, switched to mental ray renderer, made it edge length 0.5, max displace 20, max subdiv 16k, and smoothing on.
This is what I get in max (a simple smoothed version of the imported model without any extra details from the displacement)

PLEASE help me. What am I doing wrong?
THANKS in advance.