Cursor just freezes after sometime and i have to close it

Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

so when i leave the cursor window sometimes for like 4-5 mints and comes back it just wont work and lags badbly however the rest of the applications works perfectly fine, but when i close the cursor and opens it again it starts to work fine.

Steps to Reproduce

just leave the cursor IDE for few mints - currently i am using this with ubuntu latest version.

Operating System

Linux

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.1.20
VSCode Version: 1.105.1
Commit: a8d8905b06c8da1739af6f789efd59c28ac2a680
Date: 2025-11-22T14:51:59.472Z
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Linux x64 6.14.0-36-generic

For AI issues: which model did you use?

the model i use is sonnet 4.5

Does this stop you from using Cursor

Yes - Cursor is unusable

2

Hey, thanks for the report. Let’s collect some diagnostic info to understand the cause.

Quick checks:

Test without extensions:
cursor --disable-extensions

Leave Cursor idle for 5 minutes. Does it still freeze?

Check what’s using resources during the freeze:

  • Press CTRL+Shift+P → type “Developer: Open Process Explorer”
  • Leave Cursor idle until it freezes
  • Take a screenshot showing CPU and memory usage

Check for console errors:

  • Help → Toggle Developer Tools
  • Go to the Console tab
  • When the freeze happens, share any errors you see there

Also helpful:

  • Does this happen in a new project or an empty folder?
  • Is codebase indexing enabled? (Cursor Settings → Features → Codebase Indexing)

Let me know what you find and we’ll go from there.