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1Password High CPU Usage and Slow App

Workaround available macOS, Windows Updated October 21, 2026

Quick answer

1Password 8 (Electron) can spike CPU or freeze, often tied to Universal Autofill or the browser integration. Update, disable hardware acceleration and, if needed, fully reinstall the app.

Most likely fix: Quit and update.

Symptoms

Fans spin up, '1Password Helper (Renderer)' uses high CPU or memory, the window lags or freezes when searching.

Why it happens

  • Universal Autofill regression stuck in a loop (fixed in 8.9.4 beta, recurred later)
  • Firefox extension integration spawning processes
  • Hardware acceleration issues
  • Corrupted app support files

How to fix it

Try these in order — the most common fix is first.

  1. 1. Quit and update

    1. Quit 1Password from the menu bar/system tray or Activity Monitor
    2. Install the latest 1Password version

  2. 2. Turn off hardware acceleration

    1. 1Password > Settings > Advanced
    2. Turn off 'Use hardware acceleration' and restart the app

  3. 3. Test without browser integration

    1. Temporarily disable 'Integrate with 1Password app' in the extension
    2. If CPU drops, update the extension and re-enable it

  4. 4. Fully reinstall 1Password

    1. Uninstall 1Password including its support folders
    2. Reinstall from 1password.com and sign in again

This guide also covers

  • 1password high cpu
  • 1password slow mac
  • 1password 8 slow
  • 1password helper renderer high cpu

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