My desktop performance is great and consistent (chrome). Only complaints would be to streamline notifications and alerts more. It feels like it delays (Not so good) and lumps together notifications (pretty decent) for the same thread. Mobile experience (Chrome on Android) has kinda sucked. The display proportions are a little weird around the header and the placement of the account section is nearly as bad as the complete lack of notifications, profile viewing, and ability to request a desktop version of the site.