Hello,
I work on falling mesh but I have a problem.
I have added a “Use complexe collision as simple” on my mesh for collision with the player (it work fine).
Now, when I want use simulate physics for the mesh fall on landscape, it crosses it ! I don’t uderstand why 
Tanks you for help.
Hi Chlamy,
Collision as Simple for movable objects is not supported. It can be expensive to use the mesh as it’s own collision when set to movable. This only affects movable objects and will not affect static/non-movable ones.
It would be better to use simple collision generated in the Static Mesh Editor or to create your own custom collision hulls in your modeling application.
I hope this helps.
Tim
Ok, thanks you ! 
