I had this issue as well and discovered that the Xsyon process was still running even after I closed the game. I am assuming that this may cause an issue. You can ctrl-alt-del > Task Manager > Process tab and see if there is a Xyson.exe (forget exact process name) and if so then end that process before starting the game or, if uncomfortable doing that, just restart your pc and see if the issue remains.
Sometimes when the game closes it will not end out of your processes. You running it as admin just opens another instance of the game... ctrl+alt+del look for Xsyon.exe running, right click it and close it and this should solve all your problems once you run the launcher again.