first sorry for my english, I will try to be as clear as possible.
Recently I try to make a rigg in blender, everything was ok but now I'm doing the skinning and when I move the character in pose mode (to test the skinning) the selection of controller and move is really slow.
I downloaded many character and animate it, and I don't have the same issue of "slow pose-mode" with them.
So i searched everywhere on the internet and read all forums I can find but I didn't find solutions... I re-started my rigg twice and looked closely at my bones, the relations between bones, the IK-FK constrains ... But I didn't find any problem so I don't now where the problem come.
I don't know if it will help you but I use two addons : "Rigify" and "Bones layers Managers".
If you have any idea, or if you want more detail, I'm listening to you :)