I wanted to generate a visualization of the population distribution in Germany on community level. Since tableau does not have geoinformation on community level I extracted polygon shapes using QGIS. That worked pretty fine. And it was no problem to link the geoinformation to the population data in a workbook. However, the performance is really bad! It takes approx. 4 min to refresh data.
I'm not sure if the big amount of data is the problem. I have finally approx. 2 mio rows of data.
Maybe tableau is not a proper software to visualize the data. However, I wanted to have a interactive illustration of the data, since I wanted to connect it with other data..