Current version of dhtmlxTreeGrid doesn’t support SmartRendering or
buffering, so autoLoading is the only choice ( basically there is a
smartXMLPrasing but it works nearly the same as auto-loading except
client side caching instead of server side )
In current version the only available logic - the all children’s data must be provided and rendered in same time, so the only way to show such ammout of record, split in more deep hierarchy.
( We have in development updated version of treeGrid which will support functionality similar to smartRendering in plains grid, but it still in alpha state )