Error with animations in packaged mode with VRM4U

Hello,i am working on Unreal Engine 5.2 with the plugin VRM4U.The issue is that while in the viewport all animations are playing smoothly as you can see here :

but when i am in packaged mode i get something like that :

Which has the character going up and down as you see and is overall choppy

I created a new issue over on github but they seem less active and I assume something like that may not be limited to a specific plugin.My questions is how can i fix that?So that it looks like the viewport.

Any help is appreciated