The setting doesn't have much of a bearing on my experiences with vaporized tryptamines since they generally take me someplace else real fast.
I would have no way of determining the potency as it came from a golf ball size glob of toad venom that had been extracted and dried by a Park Ranger in Arizona that a friend of mine had been in the Peace Corps with. So technically it was Government-issue toad venom, lol.
I suspect that I didn't take enough (and I tried it twice). It was not visual, but 'heavy' in a way that's hard to describe. At one point it felt sort of like an elephant was sitting on my head. There was a sense of massive pressure, but it was not in any way painful.