

A good example of how it might play out can be seen in the bobiverse book series (we are legion, we are Bob). The main character ends up as the AI of a Von neumann probe. He/they spend most time at 1:1 speed (for sanity purposes). They can, however, “frame jack” to massive speeds for short periods. They use this to problem solve, before returning to more normal speeds to enact their solution.
I think, therefore I am. Everything else is open to flux.
If it helps, I’ve consciously made the choice to see the world as it appears to be. To interact with others, as if they truly exist. I’ve also made the choice to anchor my own morals in my own mental framework. I’m kind to others because I feel good seeing others happy. I try and make the world better, in small ways, because I want other to do the same, and don’t want to feel hypocritical.
It still unnerves me sometimes. I could turn off a lot of those feelings. I could easily make myself see others as lower, or lesser. Less worthy of happiness than me.
If the whole world is a simulation, then I deal with it as it comes. The same applies to religion.
FYI, there’s some (very weak) evidence that 3D space might actually be holographic projection from a 2D surface. If we are in a simulation, we are likely all in it together. At least we get to pick at the seams. It might even be stressing out a few higher dimensional post-grad students!