Unknown HUGE process in 2.2.9

Support Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I just restarted the IDE and it forcibly updated to version 2.2.9, where they proudly introduced some agent that supposedly finds bugs (apparently in the background). After that, a process appeared that ate 12 GB of RAM and crashed the IDE.

After restarting, various heavy and unexplained processes kept appearing here and there. Now I’ve got a process hanging at 4 GB, and I can’t figure out how to get rid of it.

There were NO changes except the update to 2.2.9.

The IDE’s own resource manager doesn’t show any process with that kind of memory usage — cursor main is light, but editor playground is using 3 GB (what even is that?), and all the rest together is under 1 GB. But the 4 GB ghost process is not visible.

How do I find out what this process is?
My IDE is constantly lagging and crashing now.

Steps to Reproduce

Just open ide

Expected Behavior

no phantom, invisible, huge processes running without being requested.

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.2.9 (user setup)
VSCode Version: 1.105.1
Commit: a86689c93e9fb11addfbefd29a6ec7c0a59175e0
Date: 2025-12-10T16:51:25.713Z
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Windows_NT x64 10.0.19045

Does this stop you from using Cursor

Yes - Cursor is unusable

2

Hey, thanks for the report.

Please help us narrow down the cause:

  1. Open Ctrl+Shift+P → Developer: Open Process Explorer and send a screenshot showing processes and memory usage
  2. Ctrl+Shift+P → Developer: Toggle Developer Tools → Console tab, copy the errors
  3. Launch from terminal with extensions disabled: cursor --disable-extensions - let us know if the leak remains
  4. Enable the Extension Monitor: Settings → Application → Experimental → Extension Monitor: Enabled, restart → Developer: Open Extension Monitor - send a screenshot of top memory users
  5. Windows Task Manager - send a screenshot of the 4–12 GB process with its name and PID

Also check whether it reproduces with no folder open in an empty window. Please share the requested materials and I’ll pass them to engineering right away.

3

Can’t reproduce the issue in 2.2.14, thanks =)

4

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