Opening a new file is slow with cursor

Support Help
1

I have some issue when trying to open a new file with cursor. Whatever the format of the file is (.txt, .json, etc…) or even the commit message, it takes 10 to 30 sec to open the file.

Sometimes I just want to quickly check some small files, or write a commit message (using git commit -a) but having to wait 30seconds to do it is quite annoying.

The rest of the performance of cursor is fine. Agents, browsing the files in the current folder is almost instant.

Anyone knows if there is some config that slows down the opening of files ?

3

Hey, thanks for the report. I’ll need a bit more info to debug:

  1. Cursor version (Help > About Cursor > Copy)
  2. OS (Windows/Mac/Linux and version)
  3. What extensions do you have installed?
  4. Try running cursor --disable-extensions from the command line. Does the lag still happen?
  5. Open Process Explorer (CMD/CTRL + Shift + P > Developer: Open Process Explorer). Which processes spike CPU when you open a file?

Also try:

  • Cursor Settings > Network > Run Diagnostics, then share the results
  • Settings > Application > Experimental > Extension Monitor Enabled, then CMD/CTRL + Shift + P > Developer: Open Extension Monitor. It might be a specific extension slowing things down

Based on similar threads (Another lag-victim / CPU 90-100%), these often help:

  • Disable HTTP/2: App Settings CTRL/CMD + , > search “HTTP/2” > enable “Disable HTTP/2”, then restart
  • Check VPN/proxy settings if you use them

Let me know what you find and we’ll dig in.

4

Hi Dean, thank you for your support.

I tries some commands you suggested, disabling extensions, removing some of them. That fixed the slow opening of the file.

Could not tell 100%, but I think it was SpecStory extension that was slowing down my cursor.

Thanks for your help !