Cap cache ceiling to 20 GB in Settings → Preferences → Local cached files to prevent eviction. Keep "Full sync" unchecked—streaming mode keeps disk usage under 5 % while still allowing pause/resume.
Set "Anyone with the link – Viewer" in One Click and Copy the URL Instantly
Right-click the browser address bar while the presentation is open, pick Copy, then hit the blue Share button → Change to anyone with the link → select Viewer → Done. The same URL is now in your clipboard and permissions are locked to view-only
