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Optimizely: Slow loading and performance issues in Content Marketing Platform (CMP)

CriticalStatus: resolvededitedStarted Resolved (2.5 h)6 updatesstatus.optimizely.com (opens in new tab)

Affected components: AnalyticsContent Marketing Platform - AnalyticsContent Marketing Platform - LibraryContent Marketing Platform - Open APIContent Marketing Platform - PlanContent Marketing Platform - RequestsLibraryOpen APIPlanRequests

Timeline of updates

  1. investigating

    We are investigating reports that the Optimizely Content Marketing Platform (CMP) is loading slowly or failing to load for some customers.
    Affected users may see a loading screen that does not finish, or pages that take much longer than usual to open. The issue is intermittent: pages may load, then slow down again when refreshed.
    Our Engineering team has reproduced the issue and is investigating the cause. We will post an update as soon as we learn more.
    We apologize for the disruption to your work.

  2. investigating

    We are continuing to investigate this issue.

  3. investigating

    We have narrowed down the behavior reported in Optimizely Content Marketing Platform (CMP).
    Based on our latest findings, CMP is not failing to load. Instead, the first load of the application may take up to approximately 60 seconds to complete, and a loading screen may appear during that time.
    We recommend allowing the page to finish loading rather than refreshing as a temporary workaround.
    Our Engineering team is continuing to investigate the cause of the delay and to improve load times. We will share more information as soon as we have them at our disposal. We apologize for any inconvenience caused.

  4. identifiedEdited

    A GA4 (Google Analytics) slowdown caused slow loading and timeouts for CMP organizations using GA4 due to internal dependencies. Our engineering team is rolling out a fix and will update when service is restored.

  5. monitoringEdited

    CMP homepage performance has returned to normal. In case you are still facing the issue, please try clearing your browser cache and reload the page. We are continuing to monitor closely and will post a final update once we confirm the issue is fully resolved.

  6. resolvedEdited

    The incident has been resolved.

Changes Rewindex caught on this incident

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Impact, status and times are the vendor’s own, as last archived. View on status.optimizely.com (opens in new tab).

Cite this

Status incident (vendor impact label: critical) posted by Optimizely, started 2026-11-13 16:02 UTC, resolved after 2.5 h, 6 update(s); edited after publishing.

Title
Slow loading and performance issues in Content Marketing Platform (CMP)
Vendor
Optimizely
Date
URL
https://rewindex.com/company/optimizely/incidents/t9ks0p7qfzhn

Optimizely profileRecent Optimizely incidentsAll outages on November 13, 2026Optimizely in November 2026MarkdownJSON