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Performance of tree load

Hello,

I am using dhtmlx tree grid. The tree grid contains 10 columns and more than 13000 rows. When I load the tree it is taking more than 15 seconds (to load the entire tree grid). I am not using dynamic loading to load the tree because I have to expand all the nodes of tree immediately after the tree is loaded.

How can I increase the performance of the tree load? Also to expand all the nodes it is taking more than 10 seconds, I need to reduce this time too.

Thanks

Are you using grid in normal or SmartRendering mode?
Normally, performance can be significently increased by SmartRendering  mode usage
           http://dhtmlx.com/docs/products/dhtmlxTreeGrid/samples/loading_big_datasets/treegrid_srnd.html?un=1225711439000
but if it already used - there is no way to increase it even more.