Cel Shading Post Process problem

So I’ve used the tutorial located here Tutorial: Cel Shading with Post Process Material in UE4
For the most part it works great with one exception. It appears that it only works up to a certain distance, and then I get results like this…

I’ve tried checking the checkbox for Infinite Extent(Unbound) but it still has “sphere of influence” if you will that only extends so far. The only thing I’m finding when searching online is to check that box to extend the Post Process across the entire scene.

Has anybody ever encountered this before?
Is there a fix?

That’s because post process cel shading is done by clipping values. The fog in your scene may cause your value clipped at long distance.
Simple solution is to not use post process, use this simple method instead.