Physics constraint glitching

Hi,
In blueprints I have made a rope swinging script. What it does is spawn a placeholder for the grappling hook at the location the player aims at by linetrace. Then it creates a constraint between the character and the placeholder and it starts simulating physics. When tested out, it initially works fine, but sometimes you’ll be randomly teleported around the grappling hook placeholder. A video of this can be found here.

The placeholder for the grappling hook is nothing more than a sphere and a physics constraint that connects to the player.

A link to the blueprint: GvKcT2UC posted by anonymous | blueprintUE | PasteBin For Unreal Engine 4

Thanks in advance!
-Lars