I have a Unity app for iOS. It has simple GUI and scans object button. When a user presses this button camera enables & Vuforia starts scanning for a marker.
On iOS10 switch from GUI to Scanning happened within 1 second. (Tested on iPhone 5, iPhone SE, iPhone 7). On iOS 11 the switching between from GUI to Scanning takes 10 seconds (tested it on iPhone SE).
Any ideas why so sudden drop in performance?