*RESOLVED* RStudio incredibly slow

RStudio IDE
1

Out of blue, RStudio became incredibly slow and freeze up. I use R version 4.5.0, and RStudio version 2024.12.1+563. I use MacOS Sequoia 15.4.1.

I searched for this topic, found some relevant posts, and tried a few suggested solutions.

  • Uncheck Show Diagnostics
  • Reboot the computer.
  • Uninstall and reinstall R and RStudio.

Nothing above has worked so far. One thing that's very weird is, when things freeze in RStudio, % CPU in Activity Monitor (MacOS) goes up to 100+%.

I'm in desperate need of help. If anyone has any idea, please let me know.

I ended up figuring this out on ChatGPT and here's what worked for me:

RStudio sometimes holds onto corrupt state/config files that cause freezing.

Steps:

  1. Close RStudio completely.

  2. In Finder, press Cmd + Shift + G, and go to:
    ~/.config/rstudio
    Delete or move this folder elsewhere (backup if needed).

  3. Also clear:
    ~/.local/share/rstudio
    ~/Library/Application Support/RStudio
    ~/Library/Preferences/com.rstudio.desktop.plist
    Then relaunch RStudio. This forces it to regenerate fresh config files.

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