In eevee, it looks normal. In cycles it looks normal in preview view, but in rendered view it looks distorted. This happens in both 2.8 and 2.9. The only thing that seam to fix it is detaching the displacement node. It only seams to happen with this seen, or at least it hasn't been so bad as to engulf the other objects.
Thanks for the help. I think I did what you suggested. Even if I didn't it still looks better. I think. If nothing else I now know what to play with.