[BUG] As context grows, claude code becomes unusable

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?

Claude code has been working fine up until two days ago. Now as context gets larger, the terminal becomes unresponsive and claude response time slows down massively. At about 1k context, typing commands into terminal becomes delayed significantly. At about 15k context, I can't type anything at all and claude becomes almost unresponsive (it updates every 10 minutes or so).

What Should Happen?

Claude should be usable. This isn't usable. I have to restart Claude every time the context reaches 1k in order to get work done.

Error Messages/Logs

Steps to Reproduce

Do tasks. Let context grow.

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

I'm not sure. Didn't have this problem at all a few days ago.

Claude Code Version

2.0.50 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_