Grainy Renders

[samfelts]

I am trying to render several rooms with lights in Keyshot 4. My renders keep coming out "grainy." I have tried increasing the sample size, turning off sharp shadows, and adjusting the material roughness. Does anyone know how I can get "smoother" surfaces?

[TpwUK]

Try using the non live renderer and see if that helps, the live render can be slow with lots of lights

Martin