Displacement issue - visible grid and banding

Hello everyone.

I used the following softs: Marvelous, 3dsMax, Zbrush, Maya, and Arnold.

I did this suit following a tutorial from Olivier Couston-https://www.artstation.com/artwork/zZOOL

I baked my displacement map and, as you can see in the renderview, I have two problems:

  1. In some places, there is a visible grid from the 1st subdivision level.

  2. Banding that is all over the object, except for the first udim.

I tried everything, and this is not the first time that I struggled with this issue.

HERE IS LINK TO MY FILES: https://drive.google.com/file/d/1XDvpwl5IKtFLl9ryWpBfF1HymgWsDADo/view?usp=sharing