Editor became unbearably slow after latest update

Bug Reports
1

Describe the Bug

After updating to the latest version, the editor is unusably slow:

  • formatOnSave is taking multiple minutes per save (usually takes <150ms)
  • file search (both in cmd+f and cmd+p hanging for up to a minute)
  • seeing new errors that ESLint is taking between 5-60seconds per file
  • AI tab completions only intermittently appearing

Steps to Reproduce

  1. Make a minor change to a file and save
  2. Try searching files

Expected Behavior

  • Saving, linting, and file search should be near-instant but are taking 30-120sec
  • AI Tab completions should appear within a reasonable timeframe but are hanging

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.1.3
VSCode Version: 1.96.2
Commit: 979ba33804ac150108481c14e0b5cb970bda3260
Date: 2025-06-15T06:35:49.230Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Darwin arm64 23.1.0

Does this stop you from using Cursor

Yes - Cursor is unusable

2

Hey, is this also happening in other projects? Can you also check the resource usage in Activity Monitor?

3

Screenshot 2025-06-20 at 10.32.00 AM
Screenshot 2025-06-20 at 10.32.00 AM1704×1646 236 KB

Here’s what the activity monitor looks like for Cursor while it’s hanging. The UI doesn’t freeze (no rainbow spinner), it just takes a while.

I haven’t been able to repro in other repos, although I don’t really have any other repos that are as big as the primary one I’m working in.

4

Hey, the issue might be related to extensions. Try booting in safe mode using this command in the terminal: cursor --disable-extensions. Also, check other projects, as the problem might be related to a specific project.