Animation Layer

[Beast Boyz]

Hello !

Asking for advice on animation

 

Here's my problem :

 

I use an animation for tree to move with the wind, it work very nice but when laid on top of each other they they tend to bug.

I've used all options in the editor i think, tried to see if the older tree was the one to be in the back but it seems to be full random...

 

Edit : After tests it seems that this is the tree furthest to the right which has priority over the others. Weird