I'm using buffered rendering mode in extjs 4.2 grid. This feature is really good as it handles large number of rows easily. But if the number of columns is 1500 and number of rows is 10 the grid becomes unresponsive and the browser is showing a message as "not responsive due to a long running script". Has anyone tried using horizontal buffering similar to vertical buffering in extjs grid? Is there any grid component that supports horizontal buffering?
