Displacement mystery

3d displacement trough V-Ray displacement mod.

Triplanar mapping: ON,
Regular V-Ray material applied.
Displacement is a mess.

Triplanar mapping: OFF,
Regular V-Ray material applied.
Displacement is OK.​

Triplanar mapping: ON,
Multi Sub-Object material applied applied.
Displacement is OK.​​

Hi, we are aware of this issue (bug tracker VGPU-3925). I will add your thread to the list and update the priority.
There are older threads about it as well (thread1 tread2).

Triplanar mapping: ON,
Multi Sub-Object material applied applied.
Displacement is OK.​​​
This is new information though. We will test it and see if it can be useful. Thanks.