What are the downsides to ending an experiment and using the results before the experiment has run for two weeks?
A) Weekly traffic variations may not be fully accounted for in the experiment. To allow the experiment to see regular traffic variations, two weeks is the recommended minimum run time.
B) Not all targeted users may have seen the experiment.
C) Not all variants may be shown during the experiment if you have many variants.
D) There is no downside to ending an experiment before two weeks has passed.
https://www.youtube.com/watch?v=TWk4NnleAv4