My personal belief is that if there is a "god", he is quite probably much like a video game programmer, who can set up a universe like an MMO and let it run "infinitely" in "real-time", but, being constrained to a similar time-scale as the "players", is unable to make a large number of fine-grained adjustments to local variables at the immediate behest of said players (i.e. "answering prayers").

This seems to unreasonably deviate from the way almost every type of simulation I've ever heard of works. You can pause/resume, you can increase/decrease the "timesteps" to make the world go "faster" (with larger quanta levels though), or you could just arbitrarily increase the raw processing speed of the machine running the simulation to make the ratio of simulated vs external time proportionally higher.

Of course, if what you're proposing instead is that our "minds" are actually outside the simulation and sending input into it, rather than being fully contained within the simulation, then yes, the real-time constraint does apply.

ETA: In the latter case, I would argue that the term "Virtual Reality" is more appropriate and the use of "simulation" here is misleading and prone to conflating or confusing the two scenarios.