GeoTiff 16-bit


I tried to work with Bison and used the “Import Mesh DEM”, but my GeoTiff has 16bit.
I’ve tried to use Photoshop to increase my Tiff to 32-bit, but Rhino only creates a planar surface.

Does anyone know how to properly handle my Tiff, or do I need to adjust the samples and X-, Y- dimensions in Grasshopper?

Before and after transforming into 32-bit