I do get crazy powerful déjà vu sometimes which then actually turns out to be a look into the future or a premonition, so I can sympathise with the thought of projections.
I've never been one to try hard drugs but the way you and others describe the trips makes me wonder, do such drugs strip the veil away from the world we're forced to see and reveal its true nature? Sort of like the matrix. I've wanted to try various things but as I already have a nervous disposition I'm not sure it's a particularly good idea. The idea of seeing the un censored world is tempting though as theories like the matrix is just one that I give credence to, and I genuinely believe that in some ways we only see what we are supposed to see, and that what's real is not what we think it is.