Your stance looks self-contradictory. An introduced change either brings enhancement, or not. In the latter case you wouldn't expect anybody to be excited. It means one only gets dopamine boost when getting closer to a goal set, i.e. the feedback works absolutely right. If after a bunch of such changes one arrives at "barely working" it indicates poorly defined goal, and/or lack of underlying knowledge. And has nothing to do with length of compilation. Actually, that's what we can expect from beginners, right? With quicker feedback they, most likely, will have a chance to absorb knowledge quicker.