GitHub user saidiraja added a comment to the discussion: Airflow 3.1.7 - UI 
very slow

Hi,

I recently worked with Airflow 3.x locally (standalone mode), and while my 
setup is much smaller, I also noticed that the UI can sometimes feel slow or 
take time to fully load certain views.

A few things that might be worth checking:

* **Browser/network side**: Sometimes the grid view loads multiple API calls, 
so delays can come from network latency or browser performance.
* **Number of DAGs and tasks**: A large number of DAGs or task instances can 
significantly impact UI responsiveness.
* **Database performance**: Since the UI depends heavily on metadata queries, 
slow responses from Postgres could affect loading times.
* **Webserver logs**: Checking logs might reveal slow API endpoints or timeouts.

>From a usability perspective, it might also help if the UI provided clearer 
>feedback when data is still loading or if requests are delayed.

I’d be interested to know if others running at scale have identified specific 
bottlenecks in Airflow 3.x UI performance.



GitHub link: 
https://github.com/apache/airflow/discussions/62466#discussioncomment-16573469

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