High Disk Writes Causing Lag

[NickX]

Describe the Bug

Every 10 seconds or so I experience incredibly high disk writes while cursor is seemingly doing nothing - No prompt being entered, no response being generated. The code base this occurs on is only around 450 files which are indexed.

Steps to Reproduce

Not sure.

Expected Behavior

Cursor will become completely unresponsive and sometimes offer to quit, reopen or wait.

Screenshots / Screen Recordings

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.3.4 (user setup)
VSCode Version: 1.99.3
Commit: bfb7c44bcb74430be0a6dd5edf885489879f2a20
Date: 2025-07-29T03:59:10.762Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.26100

Does this stop you from using Cursor

Yes - Cursor is unusable

[LawrenceI (Lawrence)]

I see similar behavior without the disk load, but the same sluggishness. I have seen quite often the windows not responsive dialog too. How frequent is this issue without the disk for you?

[deanrie]

Hey, we released a new update 1.3.7. Try updating and let me know if the issue persists.

[NickX]

So far so good.

[aaj]

I am still receiving high disk writes exactly like OP screenshot. Cursor has been slow and sluggish the last few days of using it. Intermittent freezing.

Version: 1.3.9 (user setup)
VSCode Version: 1.99.3
Commit: 54c27320fab08c9f5dd5873f07fca101f7a3e070
Date: 2025-08-01T20:19:30.453Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.19045

[NickX]

Updating to the current version solved this for me, worth a short for you as well I imagine.

Hope it works out,
Nick