I can tell you that it is not possible right now. Maybe someone from Intel can tell us if there is an update coming for the MCU but usually they don't give us date or don't make any promise.
Yes, I’m afraid that the MCU won’t reach frequencies that high. You can reach values of milliseconds and in some cases even microseconds but nanosecond timing is too fast.
So far there aren’t any plans to improve the MCU speed but hopefully it will be available in future releases.
You can see more information here MCU API | Intel® Developer Zone . Any updates will be added here.