The two truly profound spiritual experiences I've had were actually 22g "High Hawaiian" magic truffles (not mushrooms, but similar), and around 5g cubensis magic mushrooms, though I did eyeball it so it may have been more or less.
I would say that the best bet at consistency is to grind your whole batch to average the potency, then try a small dose to get a feel of your particular batch before proceeding.
One thing to be aware of is that you need a decent amount of everclear to perform the extraction, but once you've gotten everything out, you're going to want to reduce the alcohol by evaporating some of it so that you don't need to take several shots to get a good dose.
Also, boiling isn't a problem for mushrooms, psilocybin is heat tolerant to that level. Water, on the other hand, degrades psilocybin fairly quickly.
The result is properly disgusting (too sour and shrooms taste horribly and shrooms brought me almost to vomit), BUT - it makes the trips shorter (say 3 hours instead of more exhausting 6) and much more intense.
What OP describes with "really high doses", well, I went beyond with those 3g, not sure how much further. But there are few 'tricks' to make it happen. 1) be alone (so not good for those who are anxious and on first trip), so that nobody interferes with the experience and you can just go deeper and deeper if you want; 2) close your eyes, ideally laying on the couch/bed, having some relaxing soft music as a background (I had some shamanic sounds which were positively adding to the experience I believe). Visual sensory input and managing of the body is too strong for the brain to ignore, it will throttle the trip significantly.
After some time, losing gradually all my senses, losing any mental connection with all parts of the body, I ended up as a mist of atoms, egoless, just watching from distance, swirling in the music that was playing in the background although I didn't hear it directly (weird, I know, hard to describe). Imagine hot steam sauna, if you have light there you can see droplets swirling.
What was also impressive was coming down, since the process of re-discovery of my physical self, be it hand or breathing or eye muscles was more pronounced compared to losing it, one at a time. This part took easily 30-60 minutes if uninterrupted. And at the end the utter sense of peace with all universe. I am not spiritual/religious and this didn't change that, but I understood back then where religions come from and why they tell us more about ourselves rather than god itself (but that's my own conclusion). Profound, 1 in top 3 most intense experiences in life, repeatedly (didn't do it for last 10 years though, kind of took from it what I needed and could I guess).
Mind you, at any time, I could interrupt it and stand up, losing 90% of the current state. Maybe on higher dosages this wouldn't be possible so easily (but they say vitamin C or sugar terminates the trip pretty quickly, not sure never needed it).
Also, having issues, anxiety, going though harder parts of life ain't a good combination with any mind-altering drug, or any drug for that matter.
I'd suggest you try ~12g next; with knowledge it might be a bit too much but some comfort you know what itll be generally from the smaller doses. if thats not what you're after, then maybe steps at 18 and 24g.
Do pay attention to frequency warnings and such commonly cited; too much too often is a waste of good shroom. Also consider extracts, I personally found the larger doses hard on the stomach, even powdered, compressed, and rendered easy to swallow with honey. Vodka is a great solvent and can be evaporated back off.
I'm in Australia and 5g of dried mushrooms does not leave you pleasantly couchlocked, as you say. On 5g, you will have a massive, epic trip.
I have taken shrooms three times. My biggest dose was 3.5g. This was a transformative experience with ego dissolution and a thorough, extended series of interactions with my sub-consciousness and all of its complexity.
I think my biggest single does was about the equivalent of 4oz dried; great trip but the hangover was way too long.
https://www.erowid.org/plants/mushrooms/mushrooms_dose.shtml
So, it's not a bad experience, but not a great experience either.
LSD got similar feeling to me that you describe. Maybe more colorful and time warping, I don't know.
It's still drug induced state though. You don't see profound reality. You see what the drug is making you see. IMO, better to focus on the reality in front of you rather than something that is effectively a hallucination. Just my opinion though.
This last paragraph you wrote demonstrates a fundamental misunderstanding of the mind, chemistry, and reality.
The drug is a mere simple molecule. It does not contain any hallucinations or video recordings or instructions. It's a chemical that tweaks the parameters of your neurons, causing them to fire in patterns different from those they typically fire in. That's why it affects different people very differently: because the experience is created by the brain, not the drug. And although we might all take the same drug, we've all got different brains.
Anything you see/feel/hear/experience on the drug came from your own mind or its sensory input. It did not come from the drug. You may not have had those experiences without the drug, but the drug itself is not the origin of those experiences.
Your final comments about how it's "better" to "focus on reality" rather than a "hallucination" also screams that you are simply jealous of those who claim to have had profound experiences with these drugs. The people in this thread citing profound experiences are largely explaining how the drug actually helped them to better focus on reality. They aren't talking about how they spend day-in-day-out taking these drugs or thinking about them.
We're all hallucinating all the time. Our mind is constantly autonomously filling in the gaps left by our sensory system with "hallucinations". Certain drugs may cause your hallucinations to diverge farther from rational/empirical truth, but to be clear, most people aren't very rational/empirical to begin with.
It may be a "drug induced state", but the power of that state can be amazing.
Both trips had four distinct phases. Never tried to put them into words before, but hey tonight I feel creative. First phase was kind of a fun, flexible feeling. A little euphoric. I remember thinking that things like math and physics were tangible objects I could touch and interact with. I could close my eyes and travel to distant planets, then open them and be back on earth. Could still recognize the friends I was with and the house I was in, but understood things were really out of whack. Pretty neat. Wish it would have just stayed that way honestly. Second phase I pretty much detached from reality. The visual and audio hallucinations were most vivid during this time. Felt like I was outside of myself sometimes and other times totally encased inside with no concept of "outside". Trying to do any kind of deliberate interaction with the real world (like picking up a glass or turning on music) was impossible. Third phase was scary because the logical part of me realized that I was totally detached from reality, and that in the actual reality I could be doing anything right now. Running naked in the street. Pissing on myself. Who knows, because I have no way of knowing what was actually going on. Pretty scary to not even be able to trust a single one of your senses and know you can't trust them. Didn't like it. Fourth stage is kind of hard to put to words. All concept of space, time and sensory input was pretty much obliterated. Especially time was totally screwed up. At the time, I had no idea whether I spent 100 milliseconds or 100 years tripping. Time didn't even seem to consistently go in one direction. A lot of things that in real life I was feeling anxious or fearful of, or even happy about, kind of just melted away because my entire sense of self melted away. My real life was like a distant memory, one that I wasn't sure ever even happened. Maybe I was always in this state! I spent most of the night like this, not sleeping (because, what was sleep even?), and finally slowly transitioned from it into reality as morning came and the effects wore off.
Overall, the experiences were not social ha-ha silly high times had with friends, they were deeply introspective and personal, and for the vast majority of the time spent under the influence, I didn't even realize my friends were around.
I think I got everything out of these trips that I needed to, and see no need to go on one again.
With a light dose, it’s just been mild, being silly and giggling at colors and nature. Pleasant, but just kind of a fun drug honestly.
With a moderate dose, you tend to be introspective and consider your own life and relationships in different ways. Feels like therapy to be honest. Hard work. Emotionally draining. There’s usually a lesson at the end. Overall it is good for me and makes me a better, more empathetic person.
With higher doses in a so-called bad trip, it’s sometimes been just extremely confusing and not at all fun, to the extent that I’d forget my own name or what I’ve taken and basically just all memories. It’s very frustrating to be in that state, constantly trying not to fly away but not able to ground yourself. It’s a little disturbing, but not horrific. I think the reason for this is that I am afraid to lose my ego, or die, and I would actually benefit from a slightly higher dose so I'm unable to resist.
With really high doses though, it’s been a truly beautiful, enlightening experience. I still think of it sometimes. It’s very difficult to really explain in words, but it feels like kind of extreme empathy with all life. Buddhists would call it going egoless. I just felt very at peace: we all live, we all die, and it’s all okay. I’m not particularly religious or spiritual at all but that experience really changed me. It feels like life is in all these different forms, and you just happen to be one particular variation of it, but you could easily be any other living thing, so you just feel love and empathy for all life. And you know it’s finite and you’re not afraid of death. I would still attempt to avoid death, but I was just at peace with it if it was inevitable. Also, when you come back to reality you’re utterly, utterly convinced that you’ve experienced something profound, possibly, despite all your rationality, there’s a message form god inside this mushroom. It's so strange coming back, because you have to repiece together your life: "I am... a human... I live in a city called San Francisco... I am an engineer...". It’s almost like the mushroom is laughing at you: “good luck going back to your normal life now.” You’re left with “wow? That was that?!” It’s annoying honestly, because I’m not religious at all and I know it sounds crazy to even say that out loud. Of course, that feeling does slowly fade away like a distance dream or memory.
I think in general mushrooms strip away your individual sense of self and zoom out your perspective, which is why with a small dose you consider your relationships and with a larger dose you can sometimes get scared because you lose your sense of self but you're still trying to cling on. But with an even larger dose (obviously it's not necessarily the dose, but it's a rough correlation) you blast through even further, and the distinction between you and everything else melts away, which is a truly profound spiritual experience. In all cases though, seeing fractals and cool stuff is very unimportant.
A great story it reminds me of is “The Egg” by Andy Weir: https://www.youtube.com/watch?v=h6fcK_fRYaI