In most cases, that display issue may be due to the scale of your original 3D model.We have an option in VTPro that can solve this, it would be within the advanced camera settings, deactivate the "Calculate Near/Far Plane automatically" option and adjust those values...
For this purpose, we have the "Cast Shadow" option for individual objects in 3D Models While the lights in VTPro possess the property to project shadows or not, and this attribute can be globally modified for our 3D model, certain projects require the ability to...