One thing I have noticed with my unplayable issues is that they mainly happen when my character is not where the server thinks I should be. If I go to sanctum and return to the planet I end up coming back in a tree or on another platform, as though it the server was thinking I was there when I returned to sanctum.
Does the client side data just send input and not location, so that until the clients location matches up with where the server thinks the client should be, they are both in a constant state of disconnect?