I’ve been working a lot with Cursor 1.2.4, but after upgrading to 1.3.5 yesterday, I noticed frequent random freezes. Even when the editor is idle and I’m just switching tabs in the settings, Cursor occasionally hangs. During those moments, it seems to be doing something with the filesystem - disk usage spikes noticeably. I also experience freezes quite often when the AI agent is running. Version 1.2.4 didn’t have any of these issues and worked smoothly.
P.S. I had a freeze when I tried to copy the version info from Help → About in the Cursor menu.
Steps to Reproduce
Just try to start a huge task for AI-agent with many edits.
Expected Behavior
No freezes
Operating System
Windows 10/11
Current Cursor Version (Menu → About Cursor → Copy)
I have the same issue.
It is freezing even when working in terminal or writing code, not only the agent.
This freeze is for a few seconds. Sometimes more, and I need to reboot PC.
I reverted from Cursor v1.3.6 on Windows 11 pro to v1.3.4 and it works well so far. 1.3.6 wouldn’t run, kept getting that BS model has timed out garbage or whatever. I checked to see if anyone was down based on the models I was using and they were all running fine so I knew it was cursor. Downgraded and no problems since for the last 30 minutes or so. Running a mix of Claude-4-opus and gemini-2.5-pro and both seem to be working.
I have the same problem, every time I try to avoid restarting Cursor to avoid upgrading. It’s really annoying me, because new versions - 1.3.8 and 1.3.9 didn’t resolve the issue. I hope they can fix that.
I registered only to report the same issue as everyone has here. Its basically as in this video Latest update has made the Cursor extremely laggy - #2 from another post. Stop releasing and pushing updates to people for something broken!
When I launch Cursor IDE and open my project, everything runs smooth for about 30 minutes. Then, after doing some work and spawning around 10+ medium-length chats, input lag kicks in. Not a freeze - it’s a proper input lag: I type something, nothing shows up right away, and then the whole line pops in all at once. During this, the cursor still blinks like everything’s fine - no actual freeze.
A similar lag happens when switching from Cursor to another app and back - there’s a 3–4 second delay right after I click into an input field in the editor or chat. Feels like Cursor is doing some heavy internal magic, but according to Task Manager, CPU and GPU are chilling at around 20–25%, and RAM usage isn’t spiking either - I’ve got 45% memory free.
This happens across all my projects - even the tiny ones.
This has been happening for me forever, it’s always the amount of data in the chats. The only way I can fix it which is just temporary of course is to either delete all the db files and start it up again, or by deleting all the previous chats including the current one and starting a new chat.
I’ve had reports open for this for many months , maybe even a year, it has to do with whoever programmed it making too much happen in the main v8 thread which blocks user input and eventually crashes (while the rest of the application runs fine in other threads). Also the poor storage method of chats and tracking lines by serializing json in a single row in the sqlite db and it reads and updates this every minute which lags out the whole application for increasing amount of times as it goes on. Apparently not an easy fix. I was thinking of moving the state.vsdcb to a ramdisk possibly to speed it up although i’m on nvme so it shouldn’t really matter.
This has been happening for over a year, or at least close to it. been begging them to fix it as i can’t stand any type of input lag. It’s the same lag from slack/whatsapp etc because i think they also use the v8 engine and block the main thread, despite whatsapp switching to webview2 instead of electron, webview2 still uses v8 so the lag is the same type of ■■■■. Slack does it too. It’s all related.
I’m having the same freezing issue, which seems to correspond with a large write to the SSD. I am also seeing persistent high CPU usage of VmmemWSL whenever Cursor is open. I’m not certain, but I believe it began about 1-2 weeks ago.
I’ve the same problem. I’m on arch linux i5 8th and 16gb dell laptop and cursor gets frozen literally everytime and takes about 10 seconds or more to start working again and then after a while gets frozen again it’s so annoying
Edit: i used this command to clean the chat history coz i had a doubt that it was causing that lag coz when i started using cursor ai it was fine and as days passed it’s performance got worse and worse so i got this idea from there and now my cursor is snappy and nice again.