Tables with lots of data freeze navigator window

usuario

Hi,

I'm doing a request to server with serverSide = true option and Ajax POST method (asynchronous by default).

I'm querying 1000 results to try the plugin performance. My server request delay less than 1 second.

When the data is returned, during "processing" message, the navigator window seems to be freeze, I can't click any client element (like checkbox or radiobutton) until the data is completely rendered.

Why is DataTables doing this? Low performance?

And other question, "processing message" only shown on first data load, when I sort doing header click or change the page, the message is no longer displayed more.

How can I force "processing" on every request to the server?

Thanks.