Cursor is melting my laptop

Support Help
1

Hello Cursor team,

I’m trying to diagnose what’s causing my laptop to heat up so much. I’m running a standard nextjs server on a medium sized project in the terminal but nothing else of great note. However, my laptop feels like it’s about to melt through my desk and I’m trying to figure out if something has changed on your guys end recently which is causing cursor to eat my power.

p.s. no hate, generally a big fan.

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2

Hey, thanks for the report. I see the Activity Monitor screenshot: the extension host process shows an energy impact of 1.5, which can definitely cause heating.

Similar issues were solved with some diagnostics. Can you try these steps:

  1. Test without extensions: Run cursor --disable-extensions in Terminal. If the heating goes away, an extension is likely causing it. (First install the CLI: Cmd + Shift + P, then “Install ‘cursor’ command”)

  2. Process Explorer: Cmd + Shift + P, then “Developer: Open Process Explorer”. Please take a screenshot when the heating is high.

  3. Long chats: If you have large chats open in Composer, close them and start a new one. This helped other users.

  4. Clear globalStorage (often helps, please make a backup):

    • Fully quit Cursor
    • In Finder press Cmd + Shift + G
    • Go to: ~/Library/Application Support/Cursor/User/globalStorage/
    • Rename state.vscdb and state.vscdb.backup to *.old
    • Restart Cursor

Also please share:

  • Cursor version (Help > About Cursor > Copy)
  • Project size
  • Which extensions are installed
  • Does it reproduce in an empty workspace?

This is a known issue, and the team is working on a fix.

3

Hey Dean,

Appreciate the quick response. Turns out it was a Turbopack memory leak causing the problem. Once i switched to Webpack things went back to normal so nothing on your end it seems.

Thanks,

Iain

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