Virtual Shadow map dithering with subsurface materials

I’m trying to make a Paper shader that shows the shadows of the trees that are behind the paper screen. I’ve found that the sss shading model is somewhat succesful at creating the look I want, however the shadows are very noisy because of the dithering.


‘r.Shadow.Virtual.SMRT.TexelDitherScaleDirectional’ seems to only be able to increase the size of the texels which makes the shadows blurry.

Is there a way to make the shadows more clear?