Can we apply a mutation "synchronously"?

[jraoult]

I'm using SWR as a global cache for an app where I leverage https://github.com/react-forked/dnd to implement a drag and drop based list reordering. As explained in the doc , it works well when using useState's setter to update the list order on drag-drop since it is batched in the next React render. When using swr I'm getting a flickering effect that I suspect is due to the "asynchronous" nature of the mutation. See below:

Is there a way to run a mutation synchronously so that the change can be batched by React and avoid flickering?