bito-code-review[bot] commented on PR #40238:
URL: https://github.com/apache/superset/pull/40238#issuecomment-4484875883

   <!-- Bito Reply -->
   The PR diff and comments indicate a logic error in the documentation 
regarding the `DASHBOARD_VIRTUALIZATION` and 
`DASHBOARD_VIRTUALIZATION_DEFER_DATA` flags. The documentation claims that 
charts outside the viewport don't fetch data under `DASHBOARD_VIRTUALIZATION`, 
but in reality, data fetching is controlled by the 
`DASHBOARD_VIRTUALIZATION_DEFER_DATA` flag, which is off by default. This 
discrepancy can mislead operators about the performance benefits of 
virtualization. To resolve this, update the documentation to clarify that 
virtualization gates rendering, while off-screen query deferral depends on 
enabling the defer-data flag.


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