# Agent mode is very slow

**URL:** <https://forum.cursor.com/t/agent-mode-is-very-slow/145952>\
**Category:** Bug Reports\
**Created:** [December 11, 2025, 4:07pm UTC](https://forum.cursor.com/t/agent-mode-is-very-slow/145952 "2025-12-11T16:07:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![denis0001-dev](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/denis0001-dev/32/90601_2.png) [@denis0001-dev](https://forum.cursor.com/u/denis0001-dev)\
**Post date:** [December 11, 2025, 4:07pm UTC](https://forum.cursor.com/t/agent-mode-is-very-slow/145952/1 "2025-12-11T16:07:09Z")

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### Describe the Bug

The agent responds and generates tokens very slow, making the experience very bad. Also, the Cursor IDE lags.

### Steps to Reproduce

Just make an Agent request.

### Expected Behavior

The Agent should respond quickly and the IDE shouldn’t lag.

### Operating System

MacOS

### Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.1.6  
VSCode Version: 1.105.1  
Commit: 92340560ea81cb6168e2027596519d68af6c90a0  
Date: 2025-11-20T03:38:22.386Z  
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

### For AI issues: which model did you use?

Auto

### Additional Information

I’m using Macbook Air M4, so this shouldn’t be a hardware issue.

### Does this stop you from using Cursor

Sometimes - I can sometimes use Cursor

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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:** [December 11, 2025, 6:47pm UTC](https://forum.cursor.com/t/agent-mode-is-very-slow/145952/2 "2025-12-11T18:47:46Z")

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Hey, thanks for the report.

Slow token generation and IDE lag are often caused by extensions. Try this test:

1. Run `cursor --disable-extensions` in your terminal
2. In the new window, create a fresh Agent chat (don’t open a project)
3. Send a test message

If the Agent works fine, the issue is with extensions. Then:

- Open the Extensions panel and remove extensions one by one to find the culprit
- Or use Extension Monitor: `CMD+,` \> search “Extension Monitor” \> enable, then `CMD+Shift+P` \> Developer: Open Extension Monitor

Also check process load:

- `CMD+Shift+P` \> Developer: Open Process Explorer
- Look at CPU usage for extensionHost and `ptyHost`

If the issue persists even with extensions disabled, please share:

- A screenshot from Process Explorer
- The Request ID (Chat context menu \> Copy Request ID)
- Whether you’re using Plan mode with many TODOs

Let me know how it goes.

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**Author:** ![system](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/system/32/99069_2.png) [@system](https://forum.cursor.com/u/system)\
**Post date:** [January 2, 2026, 6:47pm UTC](https://forum.cursor.com/t/agent-mode-is-very-slow/145952/3 "2026-01-02T18:47:47Z")

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Closed on January 2, 2026, 6:47pm UTC

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