Any part of the universe you look at requires simuilating too much of the entire universe to get it from the state you last observed to the state it's supposed

Any part of the universe you look at requires simuilating too much of the entire universe to get it from the state you last observed to the state it's supposed to be in now. Time is important, if it takes too long no one is going to run the simulation. The entire point of the simulation argument is they are fast and easy and therefore common. If simulations are common then it's likely we're in one. If you keep adding requirements that likely make them slow and hard then they are likely uncommon and the argument for us being in one disappears.