# Cursor very laggy **URL:** \ **Category:** Bug Reports\ **Created:** [August 3, 2025, 5:36pm UTC](https://forum.cursor.com/t/cursor-very-laggy/125493 "2025-08-03T17:36:47Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![Arno\_Burnuk](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/arno_burnuk/32/75788_2.png) [@Arno\_Burnuk](https://forum.cursor.com/u/Arno_Burnuk)\ **Post date:** [August 10, 2025, 11:52am UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/23 "2025-08-10T11:52:43Z")
Yeah seriously, how this is not being fixed boggles the mind, even Windsurf has this problem. It seems to be the long chats. Very amateur bug on the part of Cursor. Seems they’ve been vibe coding too much lol, like learn some basic design patterns and SWE principles. ---
**Author:** ![Vibecodingforever](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/vibecodingforever/32/75801_2.png) [@Vibecodingforever](https://forum.cursor.com/u/Vibecodingforever)\ **Post date:** [August 10, 2025, 12:42pm UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/24 "2025-08-10T12:42:34Z")
Same here. Cursor has gotten VERY laggy the past week or two and keeps needing reopened. ---
**Author:** ![yakovw](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/yakovw/32/28883_2.png) [@yakovw](https://forum.cursor.com/u/yakovw)\ **Post date:** [August 10, 2025, 9:58pm UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/25 "2025-08-10T21:58:44Z")
@saidattax@Jayant-WebDev Sometimes I ask myself fine, I can manage, but what about the Cursor employees who use Cursor to build Cursor? Doesn’t it freeze for them? Don’t they go crazy from it? ---
**Author:** ![tmm1](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/tmm1/32/3131_2.png) [@tmm1](https://forum.cursor.com/u/tmm1)\ **Post date:** [August 11, 2025, 1:57am UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/26 "2025-08-11T01:57:49Z")
Yes we use Cursor every day to build Cursor. But this problem seems to be worse on Linux/Windows, and many of us use Mac. Even our Linux and Windows devs don’t see issues this bad for some reason 🤔 But we are investigating all these performance issues and have made many fixes already. Please try the latest fixes available in `Cursor Settings > Beta > Update Access: Early Access` ---
**Author:** ![Alex\_Prucka](https://avatars.discourse-cdn.com/v4/letter/a/a8b319/32.png) [@Alex\_Prucka](https://forum.cursor.com/u/Alex_Prucka)\ **Post date:** [August 11, 2025, 2:14am UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/27 "2025-08-11T02:14:57Z")
This was plaguing my team and I starting about a week ago, but in short testing whatever was in Early Access seems to have improved it/fixed it for now. Will update if that is not the case moving forward. ---
**Author:** ![Nativ\_Kdoshim](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/nativ_kdoshim/32/76320_2.png) [@Nativ\_Kdoshim](https://forum.cursor.com/u/Nativ_Kdoshim)\ **Post date:** [August 13, 2025, 7:08am UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/28 "2025-08-13T07:08:22Z")
This happens to me aswell for a while now, freezes and lags in the software itself, takes ages for the AI to respond in the chats, looping in the chats and inability to complete a file-rewrite which fails over and over due to failure in Edit. this must be fixed asap. ---
**Author:** ![johnpeng47](https://avatars.discourse-cdn.com/v4/letter/j/e9bcb4/32.png) [@johnpeng47](https://forum.cursor.com/u/johnpeng47)\ **Post date:** [August 13, 2025, 2:18am UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/29 "2025-08-13T02:18:48Z")
### Describe the Bug The latest windows feels _significantly_ slow: - mem usage up 33% from baseline workload - frequent lag spikes on everything from syntax highlighting to +300msec on CTRL+P to find files - cursor tab will leave residual completion as uneditable, empty space which only goes away after deleting the surrounding block - ctrl+K “jankiness” ### Steps to Reproduce 342 Indexed files ### Expected Behavior Not like this ### Operating System Windows 10/11 ### Current Cursor Version (Menu → About Cursor → Copy) My cursor version is \>\>\>\>\> 1.4.3 ### Does this stop you from using Cursor No - Cursor works, but with this issue ---
**Author:** ![tmm1](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/tmm1/32/3131_2.png) [@tmm1](https://forum.cursor.com/u/tmm1)\ **Post date:** [August 13, 2025, 7:48pm UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/30 "2025-08-13T19:48:17Z")
This should be resolved in v1.4.5 which was released today. > [@Supper laggy cursor after updating](https://forum.cursor.com/t/supper-laggy-cursor-after-updating/126642/11): > > seems that my issues are resolved using 1.4.5 > [@Alex\_Prucka](#): > > in short testing whatever was in Early Access seems to have improved it/fixed it for now > [@On another topic](https://forum.cursor.com/t/128196/3): > > Tried latest 1.4.4 build, and its essentially fixed! > [@Cursor freezes every 10 seconds for 3 seconds or so](https://forum.cursor.com/t/cursor-freezes-every-10-seconds-for-3-seconds-or-so/125821/30): > > So far “Beta” (1.4.4) seems to have fixed the freezing issue > [@Cursor Freezing](https://forum.cursor.com/t/cursor-freezing/51293/19): > > Seems to be working without lags for now > [@Again I see constant writes to state.vscdb-journal](https://forum.cursor.com/t/again-i-see-constant-writes-to-state-vscdb-journal/122955/6): > > It is much better now. There are small writes while focusing/de-focusing Cursor (did it few times just for a test) but they are currently unnoticeable while working. > [@Cursor unusable during disk writes](https://forum.cursor.com/t/cursor-unusable-during-disk-writes/127608/7): > > Fingers crossed, seems to be running smoothly now! I really appreciate the quick patch on this. > [@\`Cursor is not responding\` / \`The window is not responding\` Issues](https://forum.cursor.com/t/cursor-is-not-responding-the-window-is-not-responding-issues/102858/86): > > I can confirm that the latest release (1.4.5) fixes or strongly improves the situation. ---
**Author:** ![f00z](https://avatars.discourse-cdn.com/v4/letter/f/dec6dc/32.png) [@f00z](https://forum.cursor.com/u/f00z)\ **Post date:** [August 14, 2025, 7:17am UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/31 "2025-08-14T07:17:35Z")
Can you tell us exactly what was changed ? ---
**Author:** ![mikej96](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/mikej96/32/7580_2.png) [@mikej96](https://forum.cursor.com/u/mikej96)\ **Post date:** [August 15, 2025, 3:50am UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/32 "2025-08-15T03:50:26Z")
Thank you this build is so much better! ---
**Author:** ![f00z](https://avatars.discourse-cdn.com/v4/letter/f/dec6dc/32.png) [@f00z](https://forum.cursor.com/u/f00z)\ **Post date:** [August 15, 2025, 4:02am UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/33 "2025-08-15T04:02:12Z")
Yes 1.4.5 is MUCH better! I have still had it lag (pauses for a few seconds here and there) , and one time i had it completely lock up for about 20 seconds but it came out of it ok. It also still lags some when the agent is working , but it seems like the massive insane lag is gone or reduced enough to not be noticable. I can only tell after i leave it open for a few days while working to see if it really is fixed. But either way i already notice a massive improvement, finally, keep up the fixes! ---
**Author:** ![GCosta](https://avatars.discourse-cdn.com/v4/letter/g/35a633/32.png) [@GCosta](https://forum.cursor.com/u/GCosta)\ **Post date:** [August 26, 2025, 11:33pm UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/34 "2025-08-26T23:33:31Z")
I am still experiencing very sluggish UI, specifically on Window even at 1.5.5. How can I submit additional logs? ---
**Author:** ![condor](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/condor/32/73148_2.png) [@condor](https://forum.cursor.com/u/condor)\ **Post date:** [August 29, 2025, 3:23pm UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/35 "2025-08-29T15:23:19Z")
hi @GCosta lets debug first without logs. - Do you have any processes running in terminal within Cursor? - Does this also occur on a new project? (would indicate large chat storage) - Does this occur when you run with extensions disabled? `cursor --disable-extensions` Please explain your usage more detailed, e.g. if you use Remote SSH, WSL, … I will check with team about logs. ---
**Author:** ![GCosta](https://avatars.discourse-cdn.com/v4/letter/g/35a633/32.png) [@GCosta](https://forum.cursor.com/u/GCosta)\ **Post date:** [August 29, 2025, 7:22pm UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/36 "2025-08-29T19:22:53Z")
Hi Condor, - No terminals processes running. - It does happen on new projects as well, even ones that no messages have been sent yet. - Disabling all extensions did not help - It is all local development native Windows - no SSH or WSL It does not happen with VS code or other forks. It is very noticeable if I am scrolling through a file for example, it almost feels like it is trying to render what is coming next then it will freeze then allow me to scroll. I will try to check if I am able to reproduce on another Windows machine to make sure it’s not something on my end. Thank you. ---
**Author:** ![condor](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/condor/32/73148_2.png) [@condor](https://forum.cursor.com/u/condor)\ **Post date:** [August 30, 2025, 2:47pm UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/38 "2025-08-30T14:47:57Z")
@tmm1 which additional info would you need to debug this? ---
**Author:** ![tmm1](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/tmm1/32/3131_2.png) [@tmm1](https://forum.cursor.com/u/tmm1)\ **Post date:** [August 30, 2025, 3:06pm UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/39 "2025-08-30T15:06:24Z")
`>Developer: Start CPU Profiler` ---
**Author:** ![f00z](https://avatars.discourse-cdn.com/v4/letter/f/dec6dc/32.png) [@f00z](https://forum.cursor.com/u/f00z)\ **Post date:** [August 30, 2025, 6:08pm UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/40 "2025-08-30T18:08:53Z")
While the 1.4.5 fixed a lot of the lag, it still lags when there’s a lot of chats but more like.. every so often it stops for 2-3s then comes back. Deleting old chats helps, although shouldn’t be necessary.. This lag was like 50x worse before the changes in 1.4.5 , it’s not ultra annoying to the point i can’t use the app any more but it still there. Hopefully they will continue to work on that. Try deleting many old chats and starting a new one in your current session and see if that fixes the lag, if it does then it’s the same issue ---
**Author:** ![rollrat](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/rollrat/32/31408_2.png) [@rollrat](https://forum.cursor.com/u/rollrat)\ **Post date:** [September 2, 2025, 5:52am UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/41 "2025-09-02T05:52:58Z")
any update on it? I’ve been experiencing severe lag since uninstalling the ms dev container as instructed by Cursor v1.5.9. Also, the Cursor seems to be interfering with the chrome browser, and using the browser while remotely accessing the Cursor causes similar lag. ---
**Author:** ![merlin.audio](https://avatars.discourse-cdn.com/v4/letter/m/c67d28/32.png) [@merlin.audio](https://forum.cursor.com/u/merlin.audio)\ **Post date:** [September 13, 2025, 6:15pm UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/43 "2025-09-13T18:15:07Z")
I’ve been having pretty mad input lag which gets worse after 1. Having a project open for a while 2. macOS going to sleep (or, perhaps, just Cursor being open for a long while - since my mac goes to sleep when I’m away for a long time) “Reload Window” gives instant improvement, although not back to NO input lag. I’ve tried everything, including setting `extensions.experimental.affinity` to a different process for each extension: ```auto "extensions.experimental.affinity": { // "gregoire.dance": 1, "svelte.svelte-vscode": 2, "bradlc.vscode-tailwindcss": 3, "rust-lang.rust-analyzer": 4, "anysphere.cursor-always-local": 5, "anysphere.cursor-retrieval": 6, "anysphere.cursor-tokenize": 7, "anysphere.cursor-shadow-workspace": 8, "vscode.typescript-language-features": 9, "anysphere.cursor-deeplink": 10, "anysphere.cursor-file-service": 11, "esbenp.prettier-vscode": 12 }, ``` ---
**Author:** ![condor](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/condor/32/73148_2.png) [@condor](https://forum.cursor.com/u/condor)\ **Post date:** [September 14, 2025, 3:40pm UTC](https://forum.cursor.com/t/cursor-very-laggy/125493/44 "2025-09-14T15:40:27Z")
@merlin.audio please share here the Cursor version as full block under About. [Previous page](https://forum.cursor.com/t/cursor-very-laggy/125493.md?page=1) [Next page](https://forum.cursor.com/t/cursor-very-laggy/125493.md?page=3)