I used to dose between 2.5-3.5 but after a notable 40 or so times eating mushrooms I can find myself eating a little more than 4 grams for a comfortable semi-social setting, maybe spent watching movies or standing in different places with friends making observations and jokes obscure or creating memes.
so to me a dignified certain HEAVY dose begins at 5+, I don't have a resistance, but I have a direct affinity towards mushrooms and LSD, mainly our topic at hand though.
my third trip was a 5 gram dose, with my first direct cognitive realization which involved seeing duality as just perspective rather than absolute reality, nothing was good or bad, and I was coming to terms with the fact was it all just "is". such impulses i've studied comprehensively since.
I've had a 4.5 gram dose i've considered fairly high with two strains mixed, I am not adept at identifying different strains as I just buy em and eat em. but was the most colorful open eyed visuals i've ever had with unheard of (for me) feelings of "holyness" or "divinity".
and *drumroll*... a 6.5 gram dose! in tea, well it's a vague estimation as I had been steeping 8 grams in a cup of water, drank the water and ate all but a small few sloppy, gag-inducing globs/stems. so I imagine it no less than 6.5 worth of dried mushrooms consumed. I had my first momentary phase out of proper consiousness of my own surroundings, I was walking a beach I am very familiar with and suddenly my walking slowed and all the normal people on the beach were all of a sudden tribal people with fires lit and dogs running around, people chasing one another, sticks being sharpened, etc. then a girl runs up to me and speaks (in a tounge I could not translate), my friend calls my name from 40 feet away and I snap back into it and walk back to my homestead.
before the short episode I was laying on the grass during the malaise stage with profound hard to ignore visuals of the clouds shifting and raising dimensions, becoming thinner/thicker, making personified gestures and faces. luckily I was with friends on step down doses (mine 6.5, A had 5, S had 2.5).
big hallucinations on big doses of mushrooms, LSD I almost have to invoke them at medium doses or lower but mushrooms, right to my eyelids!