I've taken 1P-LSD on the following dates/doses and think I can say something about tolerance
July 3 - 25 ug; light sensitivity, color shifting. Can eat easily. Mood improvement, Up for a total of 23 hours. Can't sleep for 11 hours after dropping.
July 10 - 75 ug; light sensitivity, color shifting, A bit of the chills, pattern perception completey fluid. Up for a total of 22 1/2 hours. Can eat easily. Can't sleep for 10 hours after dropping.
July 17 - 100 ug; as above, plus seeing objects melt, moments of eternity and watching the air freeze solid, Music sounded...odd. I can't listen to Pink Floyd 'Wish You Were Here' for a while. Coordination completely shot. Up for ~21 hours, Slept 11 hours after dropping
July 24 - 100 ug; ; light sensitivity, color shifting, felt no different than the first 75 ug trip on the 10th. OEV's were mild in comparison to the 17th. Up for a total of 22 hours. Slept fitfully 8 hours after dropping. Music sounded better, but food didn't taste quote so good.
Over 4 trips, one week after the other, I think that the visuals have gotten slightly weaker. but curiosity. sense of wonder and CEV's have increased slightly. Hunger has never been impaired, Chills and body shaking have increased, but not to an alarming level. Muscle clenching was annoying on the second 100 ug trip. Haven't had a headache in 3 weeks (don't have many). Mood quite elevated. I don't think I would have been incapable of social interaction.
I think, for myself....it's going to take ~ 2 weeks for a complete reset. I think with no tolerance a 150 ug trip would be perfect.
Tom