I haven't seen other threads address this issueso i'll mention it here.
What are we gonna do about the purple ground textures. I believe it's caused by way to many different textures in one cell (oblivion can handle more ground textures in a single cell than skyrim I think). still it dosen't seem like we'll ever be able to fix it ( if you try re texturing it then then the ground will turn black (with way to many ground texture. Anyway this is why the texture glitches end so abruptly (Because the texture glitch borders a cell that has less textures in (I think) the seem like the main cause but for the most part the glitched texture should turn black(which they do in some places)
BTW, what with the lod, it has texture glitches too. For some reason I can't get oscape to work with a lod at all but it seems like a texture lod shouldn't be a problem. I never created a lod but From all the tutorial I've read it seem like a textured lod shouldn't be too hard to make.