The rubisco enzime is specially ineficient. While most enzimes can usually do thousands of reactions per second, rubisco does up to 10. Organisms compensate making loads of copies, to the point it's the most abundant enzime in nature.

What can a molecule do for such a long time? I mean they move very fast, the distances there is very short, so I kinda assumed that all the molecules do they do almost instantly. But 0.1 sec doesn't seem like an instant event.