I sure can post the Plan.Exercise Room.plan F.Y.I. this plan file was created in X12. I did a quick trial plan in a new file created in x13 and the lighting worked fine.
I have tried that. Its weird. all my lights have the on column checked but the in use column unchecked. I am going to try and update my graphics card driver and see what happens.
Has anyone else noticed that in RTRT only the lights in the room you have the camera view in are in use? That's kinda a bummer for open stair wells. Is it possible to make all the lights turn on? I attached an image for reference.