Cursor Slow Autocomplete — How to Fix (2026)
Quick Answer
How do I fix "Slow autocomplete" in Cursor?
Open Cursor Settings > Models, switch to a faster model for inline completions, add large folders to .cursorignore, and restart Cursor so indexing pressure drops immediately.
Fix signals
- What this answers
- How to fix slow autocomplete in Cursor.
- Fastest move
- Check your model settings
- Use this page if
- Tab completions appear after you already finished the line
If this keeps happening
Open the next decision if the same bug class keeps coming back
Use these when the troubleshooting page named the failure, but the higher-leverage move is changing the stack choice, support layer, or production workflow.
Cursor review
Open this when the issue is making you decide whether a more code-first workflow is still the right long-term move.
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Lovable reviews
Open this when the bug is making you reconsider whether a faster generated path would reduce the operational overhead.
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Deploy hub
Open this when the fix is exposing a broader production handoff problem, not just one bug in the code.
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Tool picker
Open this when repeated failures are pushing the decision back up to the stack level.
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Firecrawl review
Open this when the app also needs live web data and the bigger stack question is no longer just about the coding tool.
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Quick Fix Summary
| Issue | Slow autocomplete |
| Fastest fix | Check your model settings |
| Use this page if | Tab completions appear after you already finished the line |
Symptoms
- !Tab completions appear after you already finished the line
- !Typing feels delayed before autocomplete appears
- !The editor feels sluggish when suggestions load
- !Suggestions are useful but arrive too late to use
Step-by-Step Fix
Check your model settings
Go to Cursor Settings > Models. For tab completions, use a fast model like GPT-4o-mini. Reserve slower models (Claude) for Composer tasks.
Disable unnecessary extensions
Extensions can conflict with Cursor's AI features. Disable all non-essential extensions and re-enable them one by one to find the culprit.
Clear Cursor cache
Close Cursor. Delete the cache folder at ~/.cursor/cache (macOS) or %APPDATA%/Cursor/cache (Windows). Restart Cursor.
Check your internet connection
Cursor sends code to AI APIs. A slow or unstable connection directly affects completion speed. Try a wired connection or different network.
Reduce project size in context
If your project has thousands of files, Cursor's indexing can slow down. Add large folders (node_modules, .git, dist) to .cursorignore.
Frequently Asked Questions
Usually because the completion model is too slow for inline use, or Cursor is wasting time indexing large folders and extensions in the background.
Yes. Large projects take longer to index. Use .cursorignore to exclude build artifacts and dependencies.