The number of marks being shown in a sheet will directly impact the performance of that sheet.
Most of the dashboards are meant to provide a summary of detailed data to our audience. What is the point in having millions of data points in a dashboard
(I guess, EXCEPT, when trying to find outliers or create a density map )
so, in every situation where you can reduce the # of marks to only what you need, you will see significant change in the amount of time it takes to create that view
Read more in the my previous post about tabular data
This just happens to one of the biggest reasons for bad performance. Tableau is meant to provide you visibility into your data in a way that you can interact with it. Long gone are the days when you NEEDED to create long tabular reports to have access to all your data Just reducing the amount … Continue reading Tableau Dashboard Performance Series : Tip#1: Tabular Data