...

The presence/absence of normals may affect tessellation. Otherwise, remove unwanted faceting by deleting normals in Katana if they were exported despite your intent to subdivide.

Displacement

To match Displacement from previous version of RenderMan, the following conversion may be of use:

To get a similar tessellation level, using a shading rate (deprecated) value of X would translate in using a micropolygonlength value of sqrt(X):

shading rate = 0.25, micropolygonlength = 0.5
shading rate = 1, micropolygonlength = 1
shading rate = 4, micropolygonlength = 2

To Duplicate the Geometry Settings from Maya

...