Glitch rotation in editor

Hello there, i have a weird glitch with the BP of my Character.
When the BP is not showing the part of the rotation (screen bellow) or if the windows is closed, the rotation is all glitchy and don’t rotate correctly (get bad Y value) (Gif bellow). But if the BP is open and show the part of the rotation, it’s working fine and no problem. (btw, the rotation is working with my gamepad stick)
Did someone know why i get this? And if it’s gonna be on the final game. Thanks.

Windows 10 / UE4.18

222751-2017-12-06-10-30-06.gif

Just an idea: Try connecting the Tick Event’s DeltaTime with the DeltaTime of the RInterp node. Maybe (for whatever reason) the tick event is not called every frame?

@soulsource_ag Exactly the same :confused: