Tree peformance

I was trying out the samples for tree and noticed that the tree loading takes a lot of time in IE9 and IE10 as compare to chrome.
Sample used was: dhtmlx.com/docs/products/dht … ance.html#

Chrome loads 1000 items in: 250ms
IE loads 1000 items in: 4000ms

Is there a way to increase performance for IE browsers?

You can try to use smart rendering mode to render only nodes in visible area.
dhtmlx.com/docs/products/dht … ering.html