I was just making shit it up on the spot to create a feeling of being a computer simulation where our laws of reality are governed by a function of the mechanics of a software host operating on a quantum computer that's beyond our understanding.

I didn't really think about it long enough to map all the things I said to something reality based, but the general idea is that memory relies on time, time relies on the quantum clock that's regulating the program, and the program--when interrupted---stops functioning in time. If it's brought back up to run again, the memory then starts back up and the result would be experiencing a lapse in memory. If it's never brought back, the memory (comprised of states of quantum particles, you'll have to read into quantum computing if you don't understand this) theoretically degrades and would be unrecoverable, resulting in coma / death / sent to the recycle bin.

It may be good to also assume that every cell in in your body is being referred to within this memory constraint, and over time is programmed to degrade smoothly in order to enforce finite lifespans. But in the concept here, the experiential memory just translates to actual normal memory of thought and experience.