Physics Constreins attach to character

Hi, I’m adding physics constrains to character blueprint. When I’m simulating in blueprint everything is fine character is swinging. But after i start playing a game character starts to rotate very fast not like in simulation mode .How to fix it .

I"ve added a video for this issue Physics issue UE4 - YouTube

Update, but still don’t know how to add constrains

I’ve added mechanic. Feel free to push forward project.
link text

Problem resolved in UE 4.12 Grappling Hook Constrained UE4 [Tutorial Soon] - YouTube