No progress bar when upload large file with document set content web part

Hi Chamonix,

When uploading large files using the Document Set Contents web part in SharePoint, it's not uncommon to experience issues with the progress bar and responsiveness of the page. This can be particularly noticeable when uploading files in the range of 200 MB or larger.

I think there isn't an improved version of the Document Set Contents web part specifically designed to handle large files better (such as 20 GB files).

To resolve (or mitigate) these issues, you can conside alternative methods for uploading and managing large files in SharePoint. The are 2 options that I can recommend:

1. SharePoint Sync client: you can synchronize the document library with the local file system. This allows you to upload and manage files directly from your computer's file explorer, bypassing the limitations of the web interface.

2. Using the SharePoint Migration Tool: If you need to upload multiple large files or migrate existing files to SharePoint, you can l use the SharePoint Migration Tool. 
SharePoint-Migrationstool für SharePoint und OneDrive - Migrate to Microsoft 365 | Microsoft Learn

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Kindest regards

Leon Pavesic