I’ve seen this before too and can’t quite remember what it was. Did you check apply scale and unwrap with the right coordinates plugged in? Also check under material settings -> displacement if it’s set to displacement and bump since you have a bump map plugged in too. Hope that does it for you or someone more knowledgeable comes by.
On a personal note (cabinetmaker here): If it’s supposed to be varnished wood I would scrap the displacement altogether and only use subtle bump or set the scale to something like 0.001. If done right the wood would be sanded and prepped so there’s not much displacement going on after varnishing (with very few exceptions). That’s beside the problem however, sorry.
