Yes, the Grid is re-rendered after each key press, but this is expected as it is taking advantage of React virtual DOM. Even if the render of the entire Grid component is called, React compare the DOM and only repainting the changed cell.
I extended our editing example to have more records and the Grid is still working at the same speed:
The main idea for speeding up is the ensure that the component that holds the Grid data state will have only the Grid, as this may cause re-render other components.
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