Ever used the build in Tableau function called ' Workflow Optimiser'
On the tool bar at the top of your workbook, select on Server > Run Optimizer
Once selected, The Tableau Workbook Optimizer is a tool analyses and optimises the workbooks by identifying unused data sources, redundant calculations, and other inefficiencies to improve performance and reduce workbook size.
You will get a pop-up window that identifies areas of improvement for your workbook.
