Setting expectations

If an end user is expecting near-instantaneous performance then, of course, anything less is disappointing. Explaining in advance that a complicated, detailed-oriented dashboard may not be performant can help in at least two ways. First, upon explaining the likely performance problems, a compromise may be reached that results in the creation of a less complicated dashboard that still delivers valuable information. Second, if it is absolutely necessary for the dashboard to be complicated and detailed-oriented, at least the end user has been warned that patience may be needed when interfacing it.