When the dashboard is loading initially it takes around 1minute for initialization which affects our performance. We found some unused rows and columns in the Excel and replicated by removing those unused rows/columns but no luck the performance still remains same. When we tried changing the current theme from the colour theme we could find some improvement in the performance like from 1 minute to 30 sec. We are looking for still better performance as the audience of the dashboard is the Senior Management the performance is not acceptable. I would appreciate if anyone can suugest me on this.