[BUG] Input delay in Claude Code CLI VScode Windows
Status Fixed / completed
Maintainer reply None cached
Activity 10 comments · opened Sep 16, 2025 · closed Sep 16, 2025
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?
The delay between pressing a key, and the characters rendering in the terminal CLI is >500ms.
What Should Happen?
You type, and the letters appear in the CLI in a reasonable time.
Error Messages/Logs
Steps to Reproduce
Open VScode , launch claude code, type something.
Claude Model
Not sure / Multiple models
Is this a regression?
Yes, this worked in a previous version
Last Working Version
1.0.115 (Claude Code)
Claude Code Version
1.0.115 (Claude Code)
Platform
Anthropic API
Operating System
Windows
Terminal/Shell
VS Code integrated terminal
Additional Information
Nothing has changed, it appeared out of nowhere overnight. I haven't changed any extensions, claude files, vscode version - nothing.
I have tried;
- Logging in and out
- uninstalling and reinstalling
- rm -rf /.claude/
- rm-rm /%appdata/code
- rm -rf %temp%
- Adding various settings to settings.local file in VScode from online suggestions
If I open claude code in a regular windows powershell window, the delay ceases to exist. It only happens in VScode.
10 Comments
Just realised this is a duplicate - I searched "input delay" "input lag" and never found anything, but this was posted 1hr ago #7694 my bad lads. Lowkey mine is better tho I told you what I have tried and had no success with.
Found 3 possible duplicate issues:
This issue will be automatically closed as a duplicate in 3 days.
🤖 Generated with Claude Code
It's a duplicate but with more info keep mine big dawg
I raised #7694, and I think your issue description is more comprehensive. I've noticed that Claude Code has always been quite sluggish in the Windows environment—I've tried it in both the VSCode terminal and the Android Studio terminal, and both were extremely slow. The Windows Terminal combined with Git Bash wasn't exactly smooth either, but it was still usable. Today, however, I found that Claude Code has become so laggy it's practically unusable; as you mentioned, there's a 500-millisecond delay before each character appears on the screen after typing.
I don’t use VSCode, but I’m experiencing a similar problem directly in a standalone Windows PowerShell window.
In the past two days, the input delay when running claude has become very severe. This didn’t happen before. The lag is especially noticeable while a task is running — if I pre-type the next command during execution, the keystrokes are heavily delayed.
You just need to roll back the version to npm install -g @anthropic-ai/claude-code@1.0.113 to make it work normally.
Chen my friend you are a G. Thank you. Works how it should now 👍
came here to create a new issue exactly for this reason, I'm having the same exact problem on macOS.
tested both in VSCode and Cursor, the input lag happens in both IDEs
closing this, anthropic have assigned someone to fix it - they are asking for clarification from us in https://github.com/anthropics/claude-code/issues/7694 - reply there is best
p.s. Chens suggestion to install previous version fixes it for now.
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.