Sorry for my bad manners Esac_mirmidon,
you are right , I owe you an answer:
I don't know what is causing this "positioning lag" in the FC3 planes.
And I'm also very sure that the culprit is buried somewhere deep in a hardcoded .DLL of FC3 and there is nothing I can do about it.
So I even don't start thinking to waste time to prepare a update for this mod that can be done easily by the Devs themselves.
I'm so sorry.