My hands hand feets gets bigger or smaller, looking for solution

Hello everyone, I have been working on a character that keeps getting more complexe day after day but everytime I rig it again, because I have to change my hierarchy I have been encoutering trouble to make the body, hands, heaf and feets to work properly.

Right now my character body moves well but the feets and hands are getting bigger if i put my head on the right side of the webcam and smaller if i put it on the left.

If iget closer to the camera my hans and feets get smaller and they get bigger when i move far away from the webcam.

I tried to put fixed handle on different group but it doesn't seems to work.

Here is my hierarchy:

+Character

     +Frontal

          Head

          Body

               +Left Arm

               BodyShapes

               Feets

                    +Lfoot

                    +RFoot

               +Right Arm

     +Right Profile

     +Left Profile

I would really appreciate any help. Thanks