1. Set auto-save to five minutes;
  2. Default save format: docx/xlsx/pptx for Office compatibility;
  3. Keep a backup copy every save;
  4. Set default font and size once;
  5. Turn off unnecessary startup pop-ups;
  6. Enable cloud sync and choose the local folder;
  7. Pick the default interface language;
  8. Enable dark or eye-care mode for long sessions;
  9. Customise the quick access toolbar;
  10. Choose the stable or beta update channel.

Backup

Export your settings so you can restore them after reinstalling the OS.