Microsoft’s New Outlook Takes 10 Seconds to Do What Outlook Classic Does Instantly on Windows
Microsoft’s new Outlook app for Windows, built on the WebView2 web engine, takes about 10 seconds to open an email directly from a Windows 11 notification, while the older Outlook Classic app displays the email almost instantly. Despite improvements in launch times and feature updates, the new Outlook’s reliance on multiple browser-based processes results in higher memory and CPU usage and slower notification handling. Microsoft is working on native WinUI apps to address these performance issues, but for now, Outlook Classic remains faster for notification-driven workflows.








