# Cursor IDE poor performance on v2.0 and v2.1 **URL:** \ **Category:** Bug Reports\ **Created:** [November 25, 2025, 1:38am UTC](https://forum.cursor.com/t/cursor-ide-poor-performance-on-v2-0-and-v2-1/144010 "2025-11-25T01:38:33Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![guustavocl](https://avatars.discourse-cdn.com/v4/letter/g/f475e1/32.png) [@guustavocl](https://forum.cursor.com/u/guustavocl)\ **Post date:** [November 25, 2025, 1:38am UTC](https://forum.cursor.com/t/cursor-ide-poor-performance-on-v2-0-and-v2-1/144010/1 "2025-11-25T01:38:33Z")
### Where does the bug appear (feature/product)? Cursor IDE ### Describe the Bug First of all the specs: Macbook M2 Pro 16gb - OS: macOS 26.0.1 25A362 arm64 Was using v1.7 just fine till today when I was prompt to update as my version was too old, so I did it, only to face a poor performance on v2.1 (switched to v2.0 later but was the same). There was a lot of lag and stutter when scrolling on both the Editor pane and the Secondary sidebar (Chat/Agent), also tried disable all extensions and cursor --disable-extensions but the problem persist. Got back to v1.7 where everything is fast and zero performance issues. ### Steps to Reproduce Just compare the performance when scrolling through a medium sized file, and a normal interaction with Cursor agent mode between v2.1 and v1.7 using a ARM Macbook. ### Operating System MacOS ### Current Cursor Version (Menu → About Cursor → Copy) I don’t have anymore the v2.1… Version: 1.7.54 VSCode Version: 1.99.3 Commit: 5c17eb2968a37f66bc6662f48d6356a100b67be0 Date: 2025-10-21T19:07:38.476Z (1 mo ago) Electron: 34.5.8 Chromium: 132.0.6834.210 Node.js: 20.19.1 V8: 13.2.152.41-electron.0 OS: Darwin arm64 25.0.0 ### Does this stop you from using Cursor No - Cursor works, but with this issue ---
**Author:** ![deanrie](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/deanrie/32/1263_2.png) [@deanrie](https://forum.cursor.com/u/deanrie)\ **Post date:** [November 25, 2025, 4:15pm UTC](https://forum.cursor.com/t/cursor-ide-poor-performance-on-v2-0-and-v2-1/144010/2 "2025-11-25T16:15:55Z")
Hey, thanks for the report. Similar performance issues were reported in nightly v2.1 builds and were fixed there. Let’s collect a bit of diagnostic info to understand what’s happening in your case: Quick diagnostics: - Open Activity Monitor (Applications → Utilities), sort by CPU, and share a screenshot showing all Cursor processes when the lag happens. - In Cursor v2.1.x, press `CMD+Shift+P` → run “Developer: Open Process Explorer” and share a screenshot of that too. - Which exact v2.1 build were you using? If you can briefly reinstall v2.1, please copy the version from Menu → About Cursor. It would also be helpful to know: - Does the slowdown start right away, or does it build up over time? - Does scrolling lag in all files or only in larger ones? This will help us see whether it’s tied to a specific process or to the renderer. ---
**Author:** ![Krzysztof\_Pawlicki](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/krzysztof_pawlicki/32/89359_2.png) [@Krzysztof\_Pawlicki](https://forum.cursor.com/u/Krzysztof_Pawlicki)\ **Post date:** [December 3, 2025, 1:09pm UTC](https://forum.cursor.com/t/cursor-ide-poor-performance-on-v2-0-and-v2-1/144010/3 "2025-12-03T13:09:19Z")
I experienced similar issues. I have downloaded latest version and installed in over old version. After closer look I had in Applications folder Cursor app dated at 1980 and Intel based. Had to remove it first and install again. Solved for me. ---
**Author:** ![system](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/system/32/99069_2.png) [@system](https://forum.cursor.com/u/system)\ **Post date:** [December 25, 2025, 1:09pm UTC](https://forum.cursor.com/t/cursor-ide-poor-performance-on-v2-0-and-v2-1/144010/4 "2025-12-25T13:09:29Z")
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