You can easily experience this yourself by doing grounding exercises in a lucid dream. “more real than real” is always the first thing that comes to mind.
I compare the "more real than real" to watching cinematic scenes of nature, color corrected, high frame rate, high resolution recordings of unspoiled nature.
"lucid dream" and "easily" don't mix for us. We've been trying for almost a decade with not a single actually-lucid dream. :(
We have only ever gotten close where, during a daydream, we managed to figure out that we could have been daydreaming, but past that, even our daydreams are completely non-lucid as well.
We suspect our autism is the culprit... but as for how to overcome it, we are at such a loss.