Hi Sonia, there could be many factors contributing to this. Your best bet is to contact Support. They should be able to recommend some best practices and take a look at your logs or workbook if you provide it to them. A few things to think about are how many rows are in the extract, are you viewing a complicated worksheet or dashboard when starting up, are you using a lot of filters? With some trial and error you might be able to simplify your workbook and determine exactly where the slowness is coming from.