Performance Degradation in Claude VSCode Extension with Long Prompts
Status Closed — not planned
Maintainer reply None cached
Activity 9 comments · opened Jun 1, 2025 · closed Feb 10, 2026
Bug Description
Once a prompt starts to get fairly long - about 20 lines or so - claude code starts glitching out (scrolling through the entire conversation once for EVERY time a single keyboard-input is made into the terminal. typing words makes this refresh over and over and over. Sometimes the problem goes away and the prompt is stable again, but other times it had caused VScode to completely shutdown without wrning - causing me to lose work and the whole conversation with claude - meaning i have to start up the context allll over again. It's a huge problem :(
Environment Info
- Platform: macos
- Terminal: vscode
- Version: 1.0.6
- Feedback ID: bc85ae89-1193-4afc-b131-b7072d73fe3a
Errors
[{"error":"Error: Command failed: security find-generic-password -a $USER -w -s \"Claude Code\"\nsecurity: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.\n\n at genericNodeError (node:internal/errors:983:15)\n at wrappedFn (node:internal/errors:537:14)\n at checkExecSyncError (node:child_process:882:11)\n at execSync (node:child_process:954:15)\n at tG (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:644:3921)\n at file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:572:6758\n at Q (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:532:16886)\n at oR1 (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:572:5777)\n at GG (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:572:5406)\n at PU2 (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:1976:21167)","timestamp":"2025-06-01T19:20:32.170Z"}]
9 Comments
Same here, responses can take like 20+ minutes now lol.
same here
A this date still slow, response freeze or too long
This issue has been inactive for 30 days. If the issue is still occurring, please comment to let us know. Otherwise, this issue will be automatically closed in 30 days for housekeeping purposes.
This issue happens everyday for me, i use claude in vim term buffers, and this issue can happen either when there is a resize of the buffer, or when typing to the prompt, that wastes a lot of time.
edit: was redirected from another bug marked as duplicate (https://github.com/anthropics/claude-code/issues/7226), but now it might be a different one, as this one is about vscode, and the other was in iterm (so claude code cli).
Yo, been dealing with this for months - scrolling dies randomly and can't see what Claude's writing. Super frustrating.
We fixed it at Hardwick Software Services. Just run:
npm i -g claudescreenfix-hardwicksoftwareand it patches the terminal rendering. It's not Anthropic-official but it actually works.Real talk: kinda wild a billion-dollar company hasn't patched this. Sam Altman's out here driving a Bentley while running a "nonprofit" but we're fixing terminal bugs for free lol. Classic.
Check the research blog at justcalljon.pro/research-blog - we got writeups on how the bug works and why it happens. Just Call Jon hosting, subsidiary of Hardwick Software Services. We don't got VC backing but our code works first try.
Fyi I haven't had this issue occur again
This issue has been automatically closed due to 60 days of inactivity. If you're still experiencing this issue, please open a new issue with updated information.
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.