Thank you very much for the help Gap

, actually the UZO cast shadows (and self shadowing too) without problems, but when I tweak the .....data/Cfg/Shadows ...settings, the dynamic shadows of some items like the UZO disappear

, therefore in my opinion the shadows settings that order when to start to cast shadows are not all synchronized and some shadows start to cast before and other shadows start to cast after (probably at determined resolution), the problem I have is to find where are those mysterious shadows settings and make/order all shadows work synchronised simultaneously together independently (or accordingly) to a specific resolution
Stock shadows settings cast UZO shadows and UZO self shadowing too
Modified shadows settings (sharper shadows), the UZO don't cast shadows anymore nor UZO self shadowing