"Real-time graphics" is typically used in gaming to differentiate between pre-rendered content and content that is rendered on the fly. It's not related to a 1-1 time scale of the content it's displaying. So, my assumption here is that they mean it's actually being rendered as you are using it and at an acceptable framerate, as opposed to the need for it to be simulated, rendered, and played back as a video.
> The system is designed to turn reams of simulation and testing data into real-time graphics worthy of today’s advanced video games.
What exactly do they understand under "real-time graphics" in the context of nuclear fusion? Wouldn't we need a massive slow-down on the time-axis to be able to "see" anything at all? Or is real-time referring to the user being able to interact and modify the graphics in real-time?