Hi, I'm setting a collection View in order to display content as instagram Profile view with all the photos in the grid.in order to set the layout I'm using some delegate methods of UIcollectionviewDelegateFlowLayout . When you open the project, the collectionView works well with the grid set well. The problem occurs when you scroll down very fast the collectionView so that you make momentaneously disappear all the cells. In that exact moment all the cell layout I've set before doesn't hold and the images become ultra zoomed and one on top of each other.I don't know how to fix this issue.Also in the compiler I get this error :the item width must be less than the width of the UICollectionView minus the section insets left and right values, minus the content insets left and right values.Please check the values returned by the delegate.The relevant UICollectionViewFlowLayout instance is <UICollectionViewFlowLayout: 0x7fbbe972d1f0>, and it is attached to <UICollectionView: 0x7fbbeb056400; frame = (0 0; 414 896); clipsToBounds = YES; autoresize = RM+BM; gestureRecognizers = <NSArray: 0x60000203c4e0>; layer = <CALayer: 0x600002ef19c0>; contentOffset: {0, 424}; contentSize: {414, 16048}; adjustedContentInset: {88, 0, 83, 0}; layout: <UICollectionViewFlowLayout: 0x7fbbe972d1f0>; dataSource: <InstagramClone.ProfileViewController: 0x7fbbe9708890>>.