Can anyone help me improving this rig

Hi All,

We are a small studio working in blender… we are facing some issues with our new character rig. Here are a few things which we are facing problem with

1: Skin Mirror

2: Rig lags in view port. unable to judge the movements. (Real Time 25 FPS as in Maya)

3: how to change bone axis in pose mode. Bone Axis in edit mode and pose mode are to match them.

4: unable to copy the keys from left to right.

if anybody can help this will be great

Help improve what rig? I see no link to a .blend file in your post.