Hi falcon76,

HyperShot up to V 1.9 and KeyShot is a CPU app.
The new "Comming soon Shot" (Bunkspeed) is a CPU / GPU app.

Please take a look: 3D Paintbrush ( 99,- €)
http://www.3dpaintbrush.com/
(Free 15-day evaluation)
Works great with MOI => (Import: *.step/*.iges/*.3dm/*.3ds/*.skp/*.obj...)