Replicated Attach Component To Component Issue

Character Movement Component (CMC) settings…

  • Set Movement Mode to None
  • Enable Ignore Client Movement Error Checks and Corrections

This will stop the character class from fighting the applied movement of the other class and stop the server from applying corrections to the client.

Next you want to attach the full character to the hand, not just the mesh. Never detach the characters mesh from the capsule component.

Use Attach Actor to Component… Actor being the character. The attachment has to be done in the AI Characters Class… Server-side.