What causes a delay in the width change when rotating an iOS device while using my App?

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This is likely due to a delay in the app's code recognizing the new device orientation and adjusting the layout accordingly. The app may also be taking some time to redraw the screen, causing the delay in the width change. In some cases, the delay may be caused by heavy animations or complex layout constraints that take longer to adjust to the new device orientation. Improving the app's code and optimizing the layout may help reduce the delay in width change when rotating the device.