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Limitations and Best Practices for Lightning DataTable with custom data types

Fecha de publicación: Feb 6, 2026
Descripción

Lightning Datatable with custom data types and build on large datasets has performance limitation, which causes delays rendering on the page.
There are multiple causes for this:
1. The dataTable is used to load large dataset (large number of columns and rows).
2. Custom implementation increases code implementation and add extra nesting within custom type cell. This may lead to added delay in rendering the Custom Data Type.
 

Solución
Follow below best practices when creating Custom data Type.
1. To have minimal code complexity within custom code
2. To use less nesting within custom type datatable cell
3. To reduce the number of columns from 50 to 15-20 columns when having 250+ rows.
Número del artículo de conocimiento

000742642

 
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Salesforce Help | Article