Gantt multiple,When a lot of data is selected


When the number of multiple selections is large, the performance of the selections will be delayed


I couldn’t reproduce the issue in the following snippet:

Probably, the issue is related to the Gantt configuration, but it is hard to suggest what might be wrong as I don’t see your code.
Please, add your configuration in the following snippet and make sure that the issue is reproduced there:
Then, click on the Share button and send me the link.
Or send me a ready demo with all the necessary Javascript and CSS files so that I can reproduce the issue locally.