Let's divide your entire life, from your first conscious experience to your last, into 1 hour slices.
And let's instantiate each slice as it's own mini-universe. Each mini-universe complete with it's own initial conditions and causal laws - but containing only what is necessary to generate a given slice of your experience.
These mini-universes are made of the same stuff (whatever it actually is) as our universe, and each mini-universe exists as a independent isolated entity within the timeless Meillassouxian space of possibilities.
So if (as an example) quarks and electrons cause consciousness, this means that a mini-universe would spring into existence for each 1 hour slice, with each mini-universe containing only the minimum complement of quarks and electrons with the necessary initial states required to cause one particular hour of your experience. And, after one hour, the mini-universe ends.
This is conceivable, right?
So now we have these 525,600 mini-universes (assuming you have ~60 years of conscious experience over the course of your life), each holding 1 hour's worth of reality, each causally disconnected from all of the the other slices and everything else. And each existing eternally in the space of possibilities.
Would this kind of existence be worse than your current existence? Would it "feel" different?
What test could you perform that would assure you that the above scenario isn't actually your present situation?
Okay, now let's say that instead of 525,600 slices that are each 1 hour long, we have 1,892,160,000 slices that are each 1 second long. How would your total experience differ?
Now let's say we go to .001 second long slices. And then .00000000001 second slices. And so on. At some point does your conscious experience become noticeably distorted, or disappear? If so at what point, and why?