Apple Silicon Cursor AI extreme CPU usage

Bug Report
1

Device:
Apple MacBook Pro M2 Pro
MacOS Sequoia 15.3

Cursor AI:
Version: 0.45.11
VSCode Version: 1.96.2
Commit: f5f18731406b73244e0558ee7716d77c8096d150
Date: 2025-02-07T09:43:58.555Z
Electron: 32.2.6
Chromium: 128.0.6613.186
Node.js: 20.18.1
V8: 12.8.374.38-electron.0
OS: Darwin arm64 24.3.0

When open Cursor IDE open Help → Process Explorer and see 202% CPU usage on extensionHost[1] and my laptop heats to very high temperature.

This bug persist long time ago and no updates fix the problem. It’s well known bug since March 2024 but no one try to solve it. It’s killing our devices.

2

Hey, the extensionhost indicates that the CPU load is coming from an extension. Check which one is causing it in Process Explorer.

3

Screenshot 2025-02-17 at 4.16.43 PM
Screenshot 2025-02-17 at 4.16.43 PM1782×522 40 KB

it shows nothing

4

If you have a few extensions, you can disable them all and enable them one by one to identify the problematic one. Also, previously users reported issues with the “Import Cost” extension, if you have it installed, disable it and check.