@Deathrey,
Found a solution. Changing 2 values in shader code solves the problem forever. Check it out in the link below! 
Up there I’m using one direct light at 20 degrees angle, it’s shining from right to left with 125,000 Lux (bright sunny day) it’s definitely the left image that’s looking wrong and the modified shader looks a lot more believable.
And here’s the material setup, a bit shifting SSS to yellow just so we can feel some light passing through.
If I use your normal orientation setup along with the modified shader it will look a little nicer than what I posted above. Thanks a lot for that. 
Will do a some tweaking with values in shader code and share it here in a bit.