After growing many strains and harvesting at many different points in the last 15 years and 1k + plants, I feel strongly that the type of high is dominantly strain specific.
Harvest time effects intensity of those effects and duration of the high-
Harvest early and get less high for less amount of time. Some people call this a “more up high” but it’s really just a less intense effect. You also get less yield, and over all quality.
Harvest when the plant is fully ripe and get more high for a longer amount of time. For some people being more high might feel like “couch lock”, but really it’s just being more intensely high. You also get more yield, better flavor, smell, and density on a ripe plant.
The best smoke comes from healthy fully ripe plants.