Thanks for the details — and you’re right: the Deployments page loads run history (sparklines) for each deployment over the default window, which can get heavy with ~200 flows. Short answer: in Prefect 3.4.25 there isn’t a server-side or environment-variable setting to change that default window. The UI’s time range is defined in the frontend and is not configurable via settings. What you can do today: - Use the UI time range selector: Change the time range in the top-right of the UI to “Last 24 hours.” It applies immediately and typically sticks for the session (persistence beyond a session can vary by browser; there’s no server-controlled default). - Reduce what’s shown: Filter the Deployments list (e.g., by work pool, tag, or search) to lower the number of flows the page loads at once. - If you’re open to customization: We can point you to where to patch the UI default in the source and build a custom UI. This requires forking/building the UI and isn’t a quick toggle. References (for context): - Flow run history API the UI calls: Flow run history endpoint - Self-hosted server docs: Self-hosted guide If having a 24-hour default for all users is important for you, I’m happy to open a feature request to make the UI’s default time window configurable on self-hosted instances. Would you like me to file that on your behalf? Also, if helpful, can you confirm: - Are you seeing slow page load on first open only, or consistently even after adjusting the time range? - Roughly how many deployments are visible on that page after filtering?