How do I Make arms move independently without stutter?

Right now, I'm pinning the arms (position only) to the sprite body and having them set their angle toward the mouse cursor every tick, but when I move the characters, the arm stutters as they move sideways.

This is in a sidescroller

.capx or screenshot of event?

Sorry, I'm new to the forums, here you go.

From what I'm seeing, it's actually a problem with Pinning. If you disable the follow-mouse actions, the arm still jiggles while moving.

However, there are problems that come from "Set position to object" as well (see below)

Most notably, the gun isn't actually firing *at* the mouse, and if the mouse is right above the cop, he does a cooky little dance.

I have version 190 of Construct 2, so I cant use that file, but having both the cop and the arm pinned to a player box helped with the stutter, especially when animations were added. I am aware of the aiming problems and have plans on how to fix them, but I'm not going to on this, because I do not have the sprites we will actually be using or the final animations. Thank you