### Preflight Checklist - [x] I have searched [existing issues](https://github.com/anthropics/claude-code/issues?q=is%3Aissue%20state%3Aopen%20label%3Abug) and this hasn't been reported yet - [x] This is a single bug report (please file separate reports for different bugs) - [x] I am using the latest version of Claude Code ### What's Wrong? Approx 2 mins thinking time per response even at the start of a new session. Affects Sonnet and Opus. Unable to use the product today. https://status.clau

[BUG] Cowork very slow - unusable.

Status Fixed / completed

Maintainer reply None cached

Activity 3 comments · opened May 12, 2026 · closed May 12, 2026

Preflight Checklist

[x] I have searched existing issues and this hasn't been reported yet
[x] This is a single bug report (please file separate reports for different bugs)
[x] I am using the latest version of Claude Code

What's Wrong?

Approx 2 mins thinking time per response even at the start of a new session. Affects Sonnet and Opus. Unable to use the product today. https://status.claude.com/ reports no issues. Claude.ai desktop app responding normally, Cowork sessions taking 2+ mins per turn and all MCP connectors failing to connect. Issue is Cowork-specific, not inference.

What Should Happen?

Investigate the performance issue

Error Messages/Logs

Steps to Reproduce

Try Cowork from London

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Cowork Version 1.6608.2 (ebf1a1)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Terminal.app (Win)

Additional Information

_No response_

View original on GitHub ↗

3 Comments

github-actions[bot] · 5 months ago

Found 3 possible duplicate issues:

This issue will be automatically closed as a duplicate in 3 days.

If your issue is a duplicate, please close it and 👍 the existing issue instead
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🤖 Generated with Claude Code

matthewyoungster · 5 months ago

Deleting the MCP DB server fixed this issue. Although I will have to reinstate it as I need it. not sure what caused this but the LLMs are responding in good time now

github-actions[bot] · 3 months ago

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.