View > Advanced > Optimize on Load
Turns on and off the optimization performed when loading .vue, or .svf files to improve display performance. Optimize on Load is enabled by default. If you change this option, the change does not affect the currently-open model; the software applies the option to all subsequent Smart Review projects that you open.
This option removes transparency from materials of the simple or detailed physical aspects of graphic objects that are not Smart 3D reference geometry. If you require transparency, or you encounter other issues caused by the optimization, clear the option to turn it off.