Hi @inder.singh
Within 50k rows I would already recommend adding pagination to the project. At the moment we do not have this functionality (yet). However, that might help to improve not only performance but also UX.
Alternatively you can also use pagination on the frontend like so Handsontable example - JSFiddle - Code Playground and add an input outside Handsontable to filter our the data. That should work faster as then Handsontable does not need to render the list of values within the menu.