Memory leak causes entire computer to freeze

Support Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Cursor performance takes a nose dive and eventually locks up my entire machine. My OS notifies me that my system has run out of application memory (see screenshot).

This happened earlier this week as well. It seems to coincide with an update.

Steps to Reproduce

Just using the app: I don’t do anything in particular.

Expected Behavior

Not have a memory leak that locks up my machine.

Screenshots / Screen Recordings

image (1).png
image (1).png431×487 56.7 KB

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.2.14
VSCode Version: 1.105.1
Commit: 1685afce45886aa5579025ac7e077fc3d4369c50
Date: 2025-12-11T01:12:35.790Z (18 hrs ago)
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Darwin arm64 25.1.0

Does this stop you from using Cursor

Yes - Cursor is unusable

2

Hey, thanks for the report. Let’s figure out what’s using memory.

Can you open the Process Explorer to see which process uses the most memory?

  1. CMD+Shift+P
  2. Type Developer: Open Process Explorer
  3. Take a screenshot when you see high memory usage

Also check extensions:

  1. Settings > Application > Experimental > enable Extension Monitor Enabled
  2. CMD+Shift+P > Developer: Open Extension Monitor
  3. Take a screenshot

Additionally:

  • What’s the size of your project/codebase?
  • Is codebase indexing enabled (Cursor Settings > Indexing & Docs)?

For now, try launching Cursor without extensions: run cursor --disable-extensions from the terminal. This will help see if an extension is causing the issue.