If you're building a dashboard in .NET 6 WinForms and looking for a modern, high-performance charting solution, you can try the Syncfusion WinForms Chart library.

• It offers a wide variety of 45+ chart types including line, bar, pie, area, and financial charts.

• Optimized for performance, it handles large datasets smoothly without lag.

• Fully customizable with rich styling and interaction options like zooming, panning, tooltips, and annotations.

For more detailed information, refer to the following resources:

Demo: https://github.com/syncfusion/winforms-demos/tree/master/chart

Documentation: https://help.syncfusion.com/windowsforms/chart/getting-started

Syncfusion offers a free community license to individual developers and small businesses.

Note: I work for Syncfusion.