Interpolation frames - this determines the number of frames that will be used to interpolate GI when the Mode is set to Animation (rendering). In this mode, VRAYforC4D interpolates the irradiance from the maps of several adjacent frames to help smooth out any flickering. Note that the actual number of frames used is 2*(interp. frames)+1 - e.g. the default value of 2 means that in total 5 irradiance maps will be interpolated. Higher values slow down the rendering and may produce "lagging" effect. Lower values render faster but may increase flickering.