Describe the Bug
This is an ongoing issue and I see a lot of posts about it. When cursors chat is longer than 3 or more longer requests . The main thread becomes completely unresponsive to a point where Windows will shut it down.
I see so many posts about this, and I pad 200$ for ultra subscription but this thing is un-usable and I seriously don’t understand how this is not fixed while I see updates being pushed daily to the app.
FIX THE ■■■■ UI, at least export long-running, IO heavy tasks off to separate threads.
This is fundamental issue!
Steps to Reproduce
Run cursor,
Wait for 5 minutes and the lag will pile on. You dont even have to use the agent or the chat much.
Expected Behavior
Export IO, process heavy tasks away from the main thread to prevent crashing!
Operating System
Windows 10/11
Current Cursor Version (Menu → About Cursor → Copy)
Version: 1.2.4 (user setup)
VSCode Version: 1.99.3
Commit: a8e95743c5268be73767c46944a71f4465d05c90
Date: 2025-07-10T17:09:01.383Z
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 10.0.22631
Does this stop you from using Cursor
Yes - Cursor is unusable