# Apple Silicon Cursor AI extreme CPU usage

**URL:** <https://forum.cursor.com/t/apple-silicon-cursor-ai-extreme-cpu-usage/51526>\
**Category:** Bug Reports\
**Created:** [February 17, 2025, 5:57am UTC](https://forum.cursor.com/t/apple-silicon-cursor-ai-extreme-cpu-usage/51526 "2025-02-17T05:57:42Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![noonchi9](https://avatars.discourse-cdn.com/v4/letter/n/858c86/32.png) [@noonchi9](https://forum.cursor.com/u/noonchi9)\
**Post date:** [February 17, 2025, 5:57am UTC](https://forum.cursor.com/t/apple-silicon-cursor-ai-extreme-cpu-usage/51526/1 "2025-02-17T05:57:42Z")

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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.

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**Author:** ![deanrie](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/deanrie/32/1263_2.png) [@deanrie](https://forum.cursor.com/u/deanrie)\
**Post date:** [February 17, 2025, 7:54am UTC](https://forum.cursor.com/t/apple-silicon-cursor-ai-extreme-cpu-usage/51526/2 "2025-02-17T07:54:29Z")

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

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<div class="post-metadata">

**Author:** ![noonchi9](https://avatars.discourse-cdn.com/v4/letter/n/858c86/32.png) [@noonchi9](https://forum.cursor.com/u/noonchi9)\
**Post date:** [February 17, 2025, 9:17am UTC](https://forum.cursor.com/t/apple-silicon-cursor-ai-extreme-cpu-usage/51526/3 "2025-02-17T09:17:15Z")

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![Screenshot 2025-02-17 at 4.16.43 PM](https://us1.discourse-cdn.com/cursor1/original/3X/a/6/a626fe5fc98d5dcf178ee15e27b4da428e68b219.png)

it shows nothing

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<div class="post-metadata">

**Author:** ![deanrie](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/deanrie/32/1263_2.png) [@deanrie](https://forum.cursor.com/u/deanrie)\
**Post date:** [February 17, 2025, 10:25am UTC](https://forum.cursor.com/t/apple-silicon-cursor-ai-extreme-cpu-usage/51526/4 "2025-02-17T10:25:52Z")

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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.