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Re:Show HN: A React drag-and-drop library by hippich on Wednesday April 04, 2018 @01:58PM (#16757226)
Some related experience:

At Blackboard we developed yet another DnD library only because existing react solutions were not accessible - https://github.com/blackboard/react-dnd-ax . But unfortunately it is not quite "performant".

Since then I found another promising library which while not fully accessible, provides great deal of keyboard interaction (last time I checked it in February - library is under very active development) - https://github.com/atlassian/react-beautiful-dnd

We are still on a lookout for well performing solution for react, yet fully accessible..

Re:Show HN: A React drag-and-drop library by kutlugsahin on Wednesday April 04, 2018 @03:43PM (#16758253)
Before I implemented this one the closest candidate for my app was react-beautiful-dnd but currently is does not support "copy" behavior which I need. react-beautiful-dnd relies on react-motion for animations and beside a bigger bundle size, to my experience css hardware accelerated transformations provides more performance. Try them under chrome 6x slowdown performance
Re:Show HN: A React drag-and-drop library by Guillaume86 on Wednesday April 04, 2018 @02:35PM (#16757575)
Was your performance issue related to high frequency rerendering in react? If it's the case take a look at animated (https://github.com/animatedjs/animated). You can use it to update dom styles out of the react render loop.