Setting custom drag gesture initiation time. Important: Should be called after each update of `dragDelegate`.

UICollectionView+DragInitationTime.swift

import UIKit

extension UICollectionView {
    
    func setupDragInitiationTime(_ time: TimeInterval) {
        let dragInitiatingRecognizerName = "dragInitiation"
        let longPressRecognizers = gestureRecognizers?.compactMap {
            $0 as? UILongPressGestureRecognizer
        } ?? []
        let dragInitiatingRecognizers = longPressRecognizers.filter {
            $0.name == dragInitiatingRecognizerName
        }
        assert(
            !dragInitiatingRecognizers.isEmpty,
            """
            Unable to setup drag initiation time - no gesture recognizer named "\(dragInitiatingRecognizerName)".
            Existing UILongPressGestureRecognizer subclasses:
            \(longPressRecognizers)
            """
        )
        dragInitiatingRecognizers.forEach { $0.minimumPressDuration = time }
    }
}