A the difference of original Breeze kwin, It seems impossible to get homogeneity between windows shadows and drop-down menus shadows.
If shadow is set to 64px 100%: the drop-down menus shadow (still thin) seems very very different than the shadow of the windows (huge).
And then if the shadow is set to 48px 50%: the drop-down menus shadows is almost invisible but still very visible under the windows.
A the difference of original Breeze kwin, It seems impossible to get homogeneity between windows shadows and drop-down menus shadows. If shadow is set to 64px 100%: the drop-down menus shadow (still thin) seems very very different than the shadow of the windows (huge). And then if the shadow is set to 48px 50%: the drop-down menus shadows is almost invisible but still very visible under the windows.