Well, I took a look at it and it looked like it was the collision mode and the material index.
Collision mode was making the engine read poligon by poligon I think, that is why it was so slow.
I just copied the cratef.fpe from the one built in in the engine and changed some of the lines like name of texture and the .x file and, isomobile
.
Next time just try to copy one of the ones already made, it will save you a lot of time.
Now you can even get on top of it and when you shoot it?, well just try it.
Just change the fpe file to this one.
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