Dashboard Randomly Display Old Data

Hi , jayaxe 

According to your description, the data in your dashboard show the old data in your dashborad?

First of all, if you are using import mode, then the data in the dashboard tile will be automatically synchronized when your dataset is refreshed.If you show old data, you can try emptying the current browser's page cache. Or go to the corresponding dataset to check whether the source data is the latest data and whether the dataset has been refreshed.

If you are using Live Connection or DirectQuery mode.A tile is a report visual pinned to a dashboard, and dashboard tile refreshes happen about every hour so that the tiles show recent results. You can change the schedule in the dataset settings, as in the screenshot below, or force a dashboard update manually by using the Refresh now option.

For more information, you can refer to :
Data refresh in Power BI - Power BI | Microsoft Learn

Thank you for your time and sharing, and thank you for your support and understanding of PowerBI! 

Best Regards,

Aniya Zhang

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly