I am planning to use material to hide my game static meshes and also disable all related the static meshes collision. I am planning to do this to a lot of static meshes in my game level; would this hurt the game performance? If the static mesh is not visible and also doesn’t have collision, would it…

I’m just saying if you want a fade in/out effect, then you can switch to a translucent material just for the fade, and then switch back to opaque.