Since you are in blender. Can you go into face mode, hover over the pillar, hit L to select just those faces, and share a screenshot of the blender UV map (for the light map, should be the second channel)?
I just want to make sure the unwrap of the pillar has just the one seam along the length and not 2
You really can’t tell from the screenshots, since we don’t know if the rectangle actually corresponds to the column portion / items arent unwrapped proportionally (which is probably fine. Except I would make the UV map for the Column the tallest/biggest part of the map and shrink the rest for a slightly better result)
Also, holy vertex count. Isn’t it a bit much for a single pillar that probably won’t even need vertex painting?