I have my grid setup in batch edit mode. I have a requirement for a user to add multiple rows to the grid which I have by prompting the user for how many new rows they want to add then looping through and calling addRow method. The problem is that it doesn't scale very well. Adding 10 rows seems to work fine but by the time you get to 50 it takes upwards of 30 seconds to add those rows. Is there anything I can do to make this faster or delay the redrawing of the grid as I add rows?