First of all, they walk like menn, and it looks crappy. If Bethesda wanted the female Orc to be more maskulin then other women, they should have given them more muscle aswell, so the animation would look more apropriate.
Secondly, with all other races, you can walk while you are over your wight limit. Orc females can not.
I am playing on a ps3, so sadly I cant get mods... Are these issues something Bethesda might fix?