Your experience is really similar to mine. I feel like i'm always in some degree of excellence or another, just based on heightened visual perception mostly. but pretty as everything is, if i'm perfectly honest, most of the time there is a twinge of some affective feeling or subtle worry or some bodily feeling (like pressure in my head that is more apparent in jhana) that indicates im not in a PCE. (also i'm able to feel really shitty but still have the visual perception there, though i'm not enjoying it, so i know it isnt an indicator of PCE, for mea nyway). i have felt like i've been in this mode before, like a while ago in childhood, or definitely while rolling. i know what you mean about things becoming more 3D - i particularly like looking at people and the way their clothes bend. do you also feel like everything is crisper and cleaner and more separated in a way? like normal-perception i'd be walking and i'd see people but not very clearly, they'd be blurry or whatever, but now walking around it's all so clear. still not a PCE as far as i can tell, though.
about space becoming wavelike - i believe when it starts being wavelike, youre on the right track (the attention wave Dan was talking about becomes apparent), and what you must do is attempt to see everything regardless of the way your attention is shaping it (in a wavelike way).
i also identify with your dread, very much so. reading
this thread really helped there. im not nearly as afraid of it now, think im making good progress. think it has to do with intuition, like Trent was saying. need pure intent and active attention to overcome it.
Also, this morning I had the strongest degree of PCE yet. This one way beyond any other before and my identity freaked out and I fell out of the PCE within minutes.
like Tarin was saying, as soon as your identity freaks, you're already out of the PCE. no degrees to it. as soon as you feel a twinge of sorrow or dread or whatever, you already know you're not in the PCE. lack of thoughts doesn't mean lack of identity.
so ya maybe some of your experiences were PCEs, i know not, but youre probably on the right track, and just gotta keep going.