Shadow quality (Shadow resolution)

Hi all,

Overall, shadow system in psvita is very slow, but im having some problems adjusting the quality. Changing soft shadows to hard shadows its working but all changes i made in "Shadow resolution" or "Shadow cascades" are not working in Vita ( they are working in the editor only ). There is some way to control shadow resolution in PsVita?

(Its not a platform quality problem, both PSM and PC are on "Fantastic")