Use MultiOptimize Selection to automatically reduce polygons of a selection of objects while preserving materials, textures, UVWs, and object instancing. There is a functional undo history for experimentation to get the polygon reduction just right. In this example, our scene went from 12 million vertices to 4 million vertices. That is a 67% reduction in vertices with zero visual quality loss.
0:00 Introduction
0:25 MultiOptimize Selection tool
0:38 Undo
1:50 Optimizing only the leafs of plants (select sub-object)
3:09 More optimization
4:03 Final result
MultiOptimize Selection: https://moody3dscripts.com/downloads/...