I had a very similar experience about six or seven years ago. While I do have a bipolar diagnosis and some of the stuff could be pinned as hallucinatory, most of it continued long after the mania had been brought under control. I was “stable” and what you’d call normal, but this brilliant visionary aspect of my life went on. I eventually learned to accept it as just part of my day rather than getting disturbed or upset by it. Only recently (oddly, after a psychedelic toad medicine ceremony) did things settle out and disappear.

Very intriguing, the computer simulation theory. If true, I’m not sure there’s any way to know. But it’s compelling. Much like the existence and nature of God, it calls free will into question. I don’t fully understand the nature of this reality, but after my experiences with (whatever was happening in my life for 5-ish years) and powerful psychedelic medicine, I am fairly certain there are other realities/dimensions.