The cursor has been in a mostly unusable state these days

Describe the Bug

Since an update a few days ago, cursor is now basically unusable.
Every five to ten seconds, there is a hard drive write of about 16 MB, and then the program goes crazy without responding, even mouse movement has become a problem.
Curse has been updated four times within two days, and each time an update prompt pops up in the bottom left corner showing a new update. When it was available, they thought it would fix the problem, but each time the results were disappointing.
It has to be said that Americans are like this. When they earn money, customers can throw it away. User experience is no longer a consideration.
Even now, when I want to copy my cursor version number, the program is still crazily running. Designers are really geniuses who can’t fix such a big bug in three or four days, right?

Steps to Reproduce

You don’t even need to fill in how to reproduce this bug, as long as you use cursor, this bug will always exist.
Always present.

Screenshots / Screen Recordings

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

版本: 1.3.8 (user setup)
提交: 1.99.3
日期: a1fa6fc7d2c2f520293aad84aaa38d091dee6fe0
Electron: 2025-07-31T21:46:17.109Z
ElectronBuildId: 34.5.1
Chromium: undefined
Node.js: 132.0.6834.210
V8: 20.19.0
OS: 13.2.152.41-electron.0

Does this stop you from using Cursor

Yes - Cursor is unusable

Hey, it’s possible that some process is excessively consuming your CPU/RAM resources. Could you check which processes are being used while Cursor is running?

Start by checking the built-in Activity Monitor, then use Process Explorer in Cursor itself. There’s also a chance the issue might be related to one or more extensions, so try launching with the flag cursor --disable-extensions. The issue might also be related to the specifics of the project, have you tried checking this in other projects?

It would be great if you could share the info and screenshots of the processes used.

Hi,

Thank you for the suggestions.

Following your advice, I have tried launching Cursor in no-extension mode (--disable-extensions) and have kept the Process Explorer open to monitor its activity.

Unfortunately, the issue persists. The entire application still freezes completely every 3 to 5 seconds.

I should mention that I am a beginner in programming. I chose Cursor because many people recommended it as a great tool for novices to build their own applications. For this reason, I may not be able to provide a highly technical analysis, but I can describe the exact behavior I’m observing in detail:

  • Blue Progress Bar: Each time the freeze happens, a blue progress bar appears in the File Explorer view on the left side. It scrolls from left to right, which looks like some kind of file indexing or updating process.

  • File Writing Status: Occasionally, a message flashes in the bottom-left status bar, indicating that a file is being written.

  • Application Unresponsive: The freeze is severe. The entire Cursor application becomes “unresponsive”. If I am in another window and try to switch back to Cursor, it takes roughly 10 seconds before the Cursor window responds and comes to the foreground.

I believe your intention for having me watch the Process Explorer was to see which process spikes in resource usage when the freeze occurs. However, the problem is that when the application freezes, the Process Explorer window, along with everything else in Cursor, also becomes completely unresponsive. As a result, the data in it doesn’t update, and I am unable to see what changes during the event.

To summarize, this is a very frequent and critical issue, making the application almost unusable. It’s not a simple lag, but a complete, multi-second freeze of the entire program every few seconds.

I hope this description helps you diagnose the problem.

Thanks for the additional info. Could you also check if this issue occurs in other projects or a newly created one? Previous similar reports suggest that a large chat history might be the cause.

Your answer is very helpful.
Thank you.
I tried to open another project file, and there was no lag in this project file. It seems that the problem lies in the chat history issue you mentioned.

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