# Trace Details: View 500k Spans Without Lag

> Trace details now render up to 500,000 spans without browser performance issues. Fixed issues with time range updates and scheduled search alerts.

Source: https://last9.io/changelog/trace-details-view-50k-spans-without-lag/

### Improvements

- [**Trace Explorer**](https://app.last9.io/traces): Trace details now load and render up to 50,000 spans (Update: We stress tested it to 500k spans now!) without performance degradation or browser crashes

### Fixes

- If the time range in [Discover API](https://app.last9.io/api-catalog) is updated but the API calls fail, data for the previous time range continues to be displayed
- When a [Scheduled Search](https://app.last9.io/control-plane/scheduled-search) name is updated, the associated alert wasn't updated and would stop working