This will be slow because:
* for shaders you use also LOD -> trees which are far away don't need a "treeWind"/"SpecBump" Shader, for example, so you switch them of (for each tree which is "far" away)
* events will be slow because the collision detection must alwas check the compelte model (more polygons) instead of checking some bounding-boxes of some trees and then check the polygons of these entites which got hit -> much faster