Hi Sage
Hope you are not serious about packing in
I had your problem but only in a small area and just turning a few edges solved the problem.
I have been a member for many years and the posts that Glen mentioned would be worth following up about Alphas and textures not being compatable in some cases. I once had a seam blend that looked perfectly normal but when the ball rolled onto it it shot off like being thrown at a brick wall, I changed the Alpha and the problem was solved, I then experimented by leaving thr Alpha and just changing one of the textures in turn and it also solved the problem. Its worth trying
You could also try highlighting the seam - Select from face, and then delete the mapping and see what happens, if need be fill in with a plain texture.
The APCD comes up with all sorts of problems like the lines accross water, I have never solved this with changing textures but if I raise or lower the water level just a few inches it clears the lines, so this seems to be a vert problem and not a texture one
I have mentioned it a few times that I am not very well up with the working of the APCD so I do my best to keep things simple, all the seam blends I have done in the courses I have uploaded have been done just using the method I outlined in the Sticky at the top of the page, I have never done an extrusion or named any planer I just select the highest number that comes up and thats it
I am still struggling with designing as I am waiting for some tests on the carpul tunnel syndrom I have with my fingers, it took me ages to do this as after a short spell my fingers are like dead sticks.
Hope you can get it sorted
Looking back its amazing how many top designers are no longer active
All the best to everyone the world is in a bit af a mess
Derrick