When the filter mode for the .nif's bumpmaps arent set to "FILTER_TRILERP" they can look like that, i think i've done that for all my .nif's. It seems like its not having an effect on some setups or on some .nifs, for some reason.
I'm probably not updating this mod anymore, if i do i will start over from scratch and make new trees (more similar to the original trees). I wanted a kind of Alice in Wonderland feel with this mod that im now completely fed up with.
Edit: "This mod" meaning my Ascadian Isles mod, not the BC mod