Question about "Optimized Game Object "

sorry my english is weak..
I have two questions..

1.what dose "Optimized GameObject" do ?
i have 100 models in scene,weather i open it or not ,the fps have no big difference,maybe open it will fast 1fps?
so..does someone have the test datas for it?

2.can it work with Final IK or other IK plugins?
in my test ,when i open it,the models' rigs have been hidden,i cant move them with Final IK,even i expose rigs in the panel

 

thanks for everyone..sorry for my weak english again...

 

Hello, did you find any solution? I meet the same problem