Ok... here is my situation, I THINK I know the answer, but opinion is always welcome.
This is what I noticed... And I find it pretty weird. Normally, I buy the same pills, same amount, and just have fun. Never had a dull moment. BUT, past like 3-4 times I rolled, the pills are affecting me the same way, BUT I rather just sit and chill, and just talk to people. In my head I'm thinking "Steam Room, with strobe light and music sounds good... Im gonna do that after this cig..."... But in reality I just end up sitting ... and not doing shit. To me that feels like a waste of the pill.
The DIFFERENT thing that I been doing is, those 3-4 times I rolled I was with different people.
I'm not sure if I explained this correct, but the question would be: Do you think that environment [as in people] has effect on the roll?
NOTE: those people weren't lame... they just didnt wanna move... well I guess they were lame lol.