AnimationToBillboard - it’s optimization tool that allows You replace complex animated model to an animated billboard.
It’s very helpful when You have some animated models in the background.
AnimationToBillboard very easy to learn and use.
Asset Store Link : AnimationToBillboard | Utilities Tools | Unity Asset Store
If You have any questions You can freely contact me at this e-mail : andre-orsk@yandex.ru
Sorry for my English and have a nice day 
