There are two settings in the render window called clamp direct samples and clamp indirect samples. I would assume these are the controls for this but they don't look like they behave the same way. The Blender setting looked like it goes to 1 and the guy set his to .98 in the tute. Posers settings seem to be defaulted to 10 each so I don't know if these are the same parameters.

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740