# Sanity: Critical incident: Elevated listener latency and error rate impacting Studio loading

**Summary:** Sanity reported critical elevated listener latency and error rates affecting Studio loading, with slower performance and lag for some customers. The recorded incident ran from 2026-10-08 09:55 UTC to 2026-10-08 14:28 UTC (4 h 33 min), though Sanity noted issues began around 9:10 UTC. A fix was fully implemented and the incident resolved. _(machine-written, sol)_
- Kind: Major incident · Label: degradation (model (Jev))
- Changed: 2026-10-08 09:55 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/160t1f18vnlh](https://stspg.io/160t1f18vnlh)
- [Company: Sanity](https://rewindex.com/company/sanity.md)
- Versions: before (none: first archived) → after incident\_version:206/qx3x441d5cxv@5633ea5edc56
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Elevated listener latency and error rate impacting Studio loading
```

**2. Added: Impact**

```diff
+ critical
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-10-08 09:55 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-10-08 14:28 UTC
```

**6. Added: Affected components**

```diff
+ Studio
```

**7. Added: Update** (investigating) · 2026-10-08 09:55 UTC

```diff
+ We are currently investigating an issue where elevated listener latency may result in slower performance and lag within Sanity Studio for a subset of customers. Our team is actively working to identify the root cause and mitigate the impact. Issue starting around 9:10 UTC.
```

**8. Added: Update** (investigating) · 2026-10-08 10:10 UTC

```diff
+ We are continuing to investigate this issue.
```

**9. Added: Update** (investigating) · 2026-10-08 10:27 UTC

```diff
+ We are currently continuing to investigate the issue, while also rolling out mitigations.
```

**10. Added: Update** (investigating) · 2026-10-08 10:37 UTC

```diff
+ We are continuing to investigate the issue. Additionally, there might be a slight delay in document publishes for "scheduled publishing" functionality.
```

**11. Added: Update** (investigating) · 2026-10-08 10:56 UTC

```diff
+ We are currently continuing to investigate the issue, while also preparing to roll a set of mitigations.
```

**12. Added: Update** (investigating) · 2026-10-08 11:01 UTC

```diff
+ We are continuing to investigate this issue.
```

**13. Added: Update** (investigating) · 2026-10-08 11:21 UTC

```diff
+ We are continuing to investigate this issue.
```

**14. Added: Update** (investigating) · 2026-10-08 11:38 UTC

```diff
+ We're continuing to investigate this issue. In the meantime, we've begun rolling out preliminary measures to mitigate its impact.
```

**15. Added: Update** (investigating) · 2026-10-08 11:58 UTC

```diff
+ We're continuing to investigate this issue. And we are continuing rolling out preliminary measures to mitigate its impact.
```

**16. Added: Update** (investigating) · 2026-10-08 12:18 UTC

```diff
+ We're continuing to investigate this issue. And we are continuing rolling out measures to mitigate its impact. "scheduled publishing" functionality confirmed unaffected by this incident.
```

**17. Added: Update** (investigating) · 2026-10-08 12:33 UTC

```diff
+ We're continuing to investigate this issue. And we are continuing rolling out measures to mitigate its impact.
```

**18. Added: Update** (investigating) · 2026-10-08 12:50 UTC

```diff
+ We're continuing to investigate this issue. And we are continuing to apply measures to mitigate its impact.
```

**19. Added: Update** (identified) · 2026-10-08 13:13 UTC

```diff
+ The issue has been identified. We are continuing to apply fixes to mitigate its impact.
```

**20. Added: Update** (identified) · 2026-10-08 13:32 UTC

```diff
+ We are continuing to apply fixes to mitigate the impact.
```

**21. Added: Update** (identified) · 2026-10-08 13:46 UTC

```diff
+ We are continuing to apply fixes to mitigate the impact. No errors have been observed from the changes rolled out so far.
```

**22. Added: Update** (monitoring) · 2026-10-08 13:57 UTC

```diff
+ A fix has been fully implemented and we are monitoring the results.
```

**23. Added: Update** (monitoring) · 2026-10-08 14:13 UTC

```diff
+ We are continuing to monitor for any further issues.
```

**24. Added: Update** (resolved) · 2026-10-08 14:28 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-08 09:55 UTC | Critical incident: Elevated listener latency and error rate impacting Studio loading (this change) | degradation |

All Sanity changes: [timeline](https://rewindex.com/company/sanity/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/id6442d3a6e3f11 · Markdown: https://rewindex.com/change/id6442d3a6e3f11.md · JSON: https://rewindex.com/api/v1/changes/id6442d3a6e3f11 · Generated 2026-10-18T02:28:03.764Z