i would like to ask you, what is the best way to render large excel files, for example with 8000 records? I downloaded sample ASP.NET WebForms project and tried to render large excel files but it takes too long time ( about 30s or even more). Is there any solution to rener files partially? Is worth to mention that i’m working with GroupdDocs Viewer 3.7. In attachment you will find sample document. This problem occurs when i try to switch from first to second tab of excel file.