Hmmm, I really think that the fog is too fast but that is rather something to test than the main problem.
However the fog almost disappears on the pavement - creating just some random noises, in my opinion.
Though this could be probably fixed by using different colours for the fog and lowering the level of the layer of the pavement highlights.
Is there specific internet source where you can find different moving patterns?
Also what do you mean by "ghosty peeps"?
Sadly I cannot use the HD Index Painting by Dan.
As a result I think I have to go without fog animation. Additionally I could not even find another pixel piece using animated fog to get a proper reference
