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Fermilab Begins Testing Holographic Universe Theory
Back in 2009, researchers theorized that space could be a hologram. Four years ago, Fermilab proposed testing the theory, and the experiment is finally going online. Jason Koebler writes Operating with cutting-edge technology out of a trailer in rural Illinois, government researchers started today on a set of experiments that they say will help them determine whether or not you and me and everything that exists are living in a two-dimensional holographic universe. In a paper explaining the theory, Craig Hogan, director of the Department of Energy's Fermilab Center for Particle Astrophysics writes that "some properties of space and time that seem fundamental, including localization [where things are], may actually emerge only as a macroscopic approximation from the flow of information in a quantum system." In other words, the location of places in space may constantly fluctuate ever so slightly, which would suggest we're living in a hologram.
If it is a simulation you could argue that it is almost certainly optimized for sentient beings.
Based on what we know about simulators, they are inherently slower and smaller in scope than the system they run on. You're never going to have a virtual machine that is more powerful than the metal that it runs on. Similarly, you're probably not going to have a simulated universe be more powerful than the universe that is hosting the simulated universe.
Think about it this way: if you're going to build models of 2x4 Lego bricks using 2x4 Lego bricks, the models will be much fewer in number than the actual Lego bricks. If you find yourself being a Lego brick, odds are you are an actual Lego brick and not a model Lego brick.
Also, tightly packed systems where the components of the systems are small and close to one another in space are faster than systems where the components are large and far from one another in space, because communication happens at the speed of light, which is constant (as far as we know).
On the other hand, if we build a model that focuses on modelling one particular thing and neglects a bunch of other stuff then the probabilities change. Perhaps we live in a simulator hosted by a much larger universe where there is virtually no life except for the being that built the simulator, whereas our simulation is optimized to be relatively packed with life.
Document its API, what else?
You are mixing two orthogonal concepts: that we are perhaps living in a simulation and that the 3D/4D world we live in are actually a flat holographic universe. Don't do that.