Final step: accent on details
Warning. It is not a regular decimation!
Model made special for VR and mobile-friendly.
Before I tried capture details in quad-faces topology but it give me around 80k of faces which is double count of triangles (aprox. 160k tris).
So its proof why some times quads tec is not really good idea for reduce memory and performance but in quad tec more easy to do UV seams.
For example that model eat 6Mb of VRAM (depend on comression texture memory) in 4x1024x1024 textures in pbr workflow and spent up to 5-6 times less for drawcall. In big environment scenes with hundreds models that helps and it is very important for framerate.
For demo Nvidia RTX