Unreal Engine 5 - Vertex color vs Textures test
Both sides of the pillar models are Nanite versions.
Left models data:
~800k polys (1 mesh), normal use of textures and normal maps.
Right models data:
~6 million polys (1 mesh), no textures, only vertex colors,
The vertex colors are baked out of the textures from the left models with ZBrush using PolyPaint from Textures