If the heuristics of the simulator are good enough, it might just do something akin to detecting our attempts at analyzing low-res data, and dynamically generate something relevant and self-consistent.

In other words, maybe the simulator is doing the equivalent of ray-tracing. When a ray of light impacts the simulated Earth, the process that generated it is simulated in detail only when a bit of Earth becomes suitably entangled with the outcome - but not if the ray serves to merely heat up the atmosphere a bit.