This setting is rarely required, but it instructs Upcart to fully re-render all Custom HTML elements in the cart whenever it updates.

We recommend enabling it if you notice that certain custom elements—such as dynamic numbers—aren’t updating properly.

For example, if you’ve added a separate subtotal line that isn’t reflecting changes correctly, turning on this setting may resolve the issue.

When enabled, this setting re-renders all elements created in the Custom HTML section of Upcart’s settings tab. This helps ensure your elements stay up to date, but may slightly impact performance due to the additional rendering.

When disabled, elements in the Custom HTML section of Upcart’s settings tab will only re-render when necessary.