While trying to figure out a workaround for MS not being able to import a DEM that it created into a new project, I thought I might try exporting and importing a model instead. However, MS takes forever to import a model that it created. Maybe even longer than the time it took to process the model from image set originally. Also, I've canceled the process and that in turn locks up MS and then it needs to be killed via Task Manager.
If I look at Task Manager, the computer is idling during this import. These models load fairly quickly in other applications designed to handle large models.
Why does MS not import models efficiently?