Since the latest update (approx Dec 11/12), the editor has become extremely laggy

Support Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Symptoms:

  1. Click Latency: Clicking on tabs, files, or chat buttons takes 15 seconds or more to register.
  2. UI Freezes: The interface hangs intermittently
  3. Performance: The “Renderer” process seems to spike, causing the window to become unresponsive.

Environment:

  • OS: macOS (MacBook Air)
  • Issue started immediately after the recent auto-update.

This makes the editor almost unusable for coding. Please investigate.

Steps to Reproduce

  1. Launch Cursor (fresh instance).
  2. Wait for the window to fully load.
  3. Attempt to interact with different UI elements (Editor, Terminal, AI Pane).
  4. Observe immediate input latency , hangs , unexpected close across all areas.

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.2.17
VSCode Version: 1.105.1
Commit: cf858ca030e9c9a99ea444ec6efcbcfc40bfda70
Date: 2025-12-11T18:30:06.649Z (10 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 x64 24.5.0

Does this stop you from using Cursor

Yes - Cursor is unusable

1 Like
Cursor IDE Keeps on Hanging-up
Warning on cursor upgrade to 2.2
2

Hey, thanks for the report. Let’s quickly check a few things:

  1. Check extensions
  • Run from terminal: cursor --disable-extensions
  • Tell me if the lag disappears
  • Enable Extension Monitor: Settings > Application > Experimental > Extension Monitor: Enabled, restart, then Cmd+Shift+P > Developer: Open Extension Monitor and send a screenshot of the top consumers
  1. Inspect processes
  • Cmd+Shift+P > Developer: Open Process Explorer
  • Send a screenshot showing which processes use CPU, especially Renderer, extensionHost, ptyHost
  1. Logs and system metrics
  • Help > Toggle Developer Tools > Console - copy errors
  • Open Activity Monitor and attach a screenshot of the load on Cursor Helper (Renderer)
  • Try File > New Window with an empty folder - do lags reproduce in a clean window?

Useful steps from the guide: Common Issues | Cursor Docs

Also please share:

  • Your Mac model and RAM
  • The list of installed extensions
  • A short video or timings of tab clicks and UI response

Share results for each step. This will help us localize the issue quickly.

3

Same for me. Will try the steps suggested when I’ve time. Anyone else with same issue?

Version: 2.2.20
VSCode Version: 1.105.1
Commit: b3573281c4775bfc6bba466bf6563d3d498d1070
Date: 2025-12-12T06:29:26.017Z
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

Apple MacBook Air M4, 24GB, Tahoe 26.1

4

I have been having the same issue! I regret updating. I wish there was a way to go back. It is nearly unusable.

is there a way to revert to an older version?

1 Like
5

+1 …

6

Same issue here as well. Disabling the extensions seems to have made issues worse.

7

It appears as the editor area where you usually edit files is experiencing redraw glitches, especially in diff view mode, or changes highlight mode.

8

yeah double down all that performance issues since 2.0, I’ve been using 1.7 still cause its the only version where performance is the same as vscode

9

I’m having the same issue, and it’s made it unusable for me now. I can barely get through 1 prompt before it just freezes out and becomes unresponsive. I’ve uninstalled that latest version (x64-2.2.43) and even tried reverting back to previous older versions (x64-2.2.20, x64-2.1.50, x64-2.0.77), but that hasn’t solved the issue. It always seems to become unresponsive eventually, and doesn’t allow you to open any files. I must kill it from task manager and restart it, then it’ll last for a couple mins before it repeats the same pattern or in some cases it restarts into an unresponsive state. Once it restarts, it grabs the latest version….I can’t stop it.

Version: 2.2.43 (user setup)
VSCode Version: 1.105.1
Commit: 32cfbe848b35d9eb320980195985450f244b3030
Date: 2025-12-19T06:06:44.644Z
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 10.0.26100

10

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