[_FKS_]

Even if you had the computing power AND if you were simulating your fusion reactor's plasma in realtime, while it's running AND you know/can predict the plasma instabilities in realtime (under a few ms), you still need a way to "counter" those instabilites in the said plasma. And you need to counter fast, before the instability "poisons" the entire plasma, something that should happen within a few ms. If you don't, your entire experiment stops, and it takes a while to get it back (minutes). Currently: 1. nobody really understands the instabilities, why and when they happen; 2. there's no way to 'counter' them. So it's not only about the computing power.