Hi, I having a hard times with VAT. Project setup - I have an old Unity project that use Gamma color space and that reason why I can't use HDR textures (Unity always recompress any HDR textures and loose a precision - its not a bug, they did it intentionally)so I can use only LDR. Labs tool version - 19.5.403. Unity version - 2021.3.9f1

So first problem - I have quite big tower (~ 12 m) that runs RBD sim with huge difference between 1 and 2 frames (also second looks broken). Gif attached

Second - I don't get how assign second material on interior pieces. Tower's debris should stay on the ground so it need a good texture (I want to replace vat on static mesh after animation but it should match). My firs idea was use vertex color and blend 2 UV sets and texture in one material - but VAT automatically create own uv and destroy my uv set. Than I decided that would be easy to use 2 materials, but after I unpack packed objects from RBD Bullet SOP solver I get only one material