Hi Eric,
Thanks for contacting Syncfusion support.
When a new table is added as data source, Dashboard Designer uses two-different kind of process based on connection type which is explained below,
- For Server connection types like SQL, MySQL, Oracle, PostgreSQL, Hive and Spark, designer directly queries the corresponding data source when we add a table.
- For File type, Web data source, Salesforce and Microsoft azure connection’s, data are migrating to an in-memory datastore. Also, we load only the limited records into the design view to speed up the process. So, initially designer loads only 100 records in data preview grid.
Based on your previous forum updates, we confirmed that your using MySQL from AWS. If so, please check the subscription speed of your AWS. Since we directly query from the database, speed depends on query execution time in corresponding database server. If you are using connection other than MySQL hosted in AWS, please let us know we will check and suggest you the possibility of increasing the speed.
Please let us know if you have any concerns.
Regards,
Anandaraj R.