1- do you use the two-sided material? ( from my experience its give more accurate result but you receive many artifacts )
2- if there is any object behind your translucent object it gives you a hollow from your object in high fresnel? this happened for you too? ( in high refraction object behind translucent object get unshaped form but its put a hollow form from original shape of the unshaped object )
you can see in the image what I mean from the hollow part.
3- there is any ultimate and accurate setup for translucent materials?
Im be grateful if you guys can help me.
thanks .