# Very high usage of CPU on apple silicon **URL:** \ **Category:** Bug Reports\ **Created:** [March 4, 2025, 10:12pm UTC](https://forum.cursor.com/t/very-high-usage-of-cpu-on-apple-silicon/59322 "2025-03-04T22:12:08Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![AlexisFimeyer](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/alexisfimeyer/32/32892_2.png) [@AlexisFimeyer](https://forum.cursor.com/u/AlexisFimeyer)\ **Post date:** [March 4, 2025, 10:12pm UTC](https://forum.cursor.com/t/very-high-usage-of-cpu-on-apple-silicon/59322/1 "2025-03-04T22:12:08Z")
Cursor, uses about 80% of my cpu whole CPU, when idle and doing nothing, it has been this way for about an hour, i restarted it many times, uninstalled-reinstalled as well, nothing stops that high cpu usage. I am on Mac M1 pro, Cursor version: 0.46.8 It has basically made cursor unusable, consumes way to much battery and makes everything very slow. ![Screenshot 2025-03-04 at 23.10.57](https://us1.discourse-cdn.com/cursor1/original/3X/d/7/d728ba5af386396029a36239bf9a1e234956ea63.png) ---
**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:** [March 5, 2025, 7:58am UTC](https://forum.cursor.com/t/very-high-usage-of-cpu-on-apple-silicon/59322/2 "2025-03-05T07:58:33Z")
Hey, can you share screenshots of the Process Explorer? The issue might be related to an extension. Also, try booting in safe mode using this command in your terminal: `cursor --disable-extensions`. ![image](https://us1.discourse-cdn.com/cursor1/original/3X/b/a/ba84d74e64276bf0a4c586371ae2379c7b57221b.png) ---
**Author:** ![AlexisFimeyer](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/alexisfimeyer/32/32892_2.png) [@AlexisFimeyer](https://forum.cursor.com/u/AlexisFimeyer)\ **Post date:** [March 5, 2025, 9:35am UTC](https://forum.cursor.com/t/very-high-usage-of-cpu-on-apple-silicon/59322/3 "2025-03-05T09:35:07Z")
![Screenshot 2025-03-05 at 10.30.40](https://us1.discourse-cdn.com/cursor1/original/3X/b/6/b64c8eb23ecaf4ca32ccffc2a1bc9d32b4816be7.png) I tried booting in safe mode and it still happens, it also seems to be somewhat related to the size of the files I open, in the project, and if i have the agent/chat bar open: No files open && no chat bar open → 35% CPU usage 1000 lines file open && no chat bar open → 60% CPU usage 1000 lines file open && chat bar open → 80% CPU usage No files open && chat bar open → 30% CPU usage 300 line file open && chat bar open → 45% CPU usage ---
**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:** [March 14, 2025, 5:03pm UTC](https://forum.cursor.com/t/very-high-usage-of-cpu-on-apple-silicon/59322/4 "2025-03-14T17:03:56Z")
This might be related to having a lot of history in your chats. Try deleting some unnecessary ones. ---
**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:** [April 13, 2025, 5:04pm UTC](https://forum.cursor.com/t/very-high-usage-of-cpu-on-apple-silicon/59322/5 "2025-04-13T17:04:00Z")
This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.