Why Is GitHub Copilot So Slow
Quick answer
Slowness comes from long chat context, summarization loops, large workspaces or busy models. Start new chats and pick a faster model.
Most likely fix: Shrink context
How to fix it
Try these in order — the most common fix is first.
1. Shrink context
- Start a new chat per task
- Close unrelated files
Did this fix it?2. Change model
- Use Auto or a smaller model for simple edits
Did this fix it?3. Check environment
- Disable other AI extensions
- Check proxy latency
- Check githubstatus.com
Did this fix it?
Symptoms
Seconds of delay for suggestions, chat answers that take minutes.
Why it happens
- Huge context windows
- Busy or heavy models
- Large repos indexed
- Network latency or proxy
This guide also covers
- why is github copilot so slow
- copilot slow
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Other GitHub Copilot errors
- GitHub Copilot Not Working in VS Code
- GitHub Copilot Not Suggesting Code
- GitHub Copilot Chat Not Responding
- GitHub Copilot Sign-In Loop or Authorization Failed
- GitHub Copilot Rate Limit Exceeded
- GitHub Copilot Out of AI Credits
- GitHub Copilot Agent Mode Stuck or Failing
- GitHub Copilot Proxy and Certificate Errors