Hi, Sincerely, i don't know how RailClone would affect to RDC.
It just sends the content of the screen to the remote computer, no matter what is running on it.
I have done a quick test using RDC in our office, and everything seems correct. I could open a RC scene, edit style and render it without problems (latest RC, Max 2024).
I'm sorry we can't be of more help in this case, but there is not any clue to investigate.