TreeGrid 6.0 is fast and can display large tables without any delayed rendering in reasonable times. This example displays 1,000 rows and 14 columns. All rows and columns are rendered on start and are shown immediatelly. Of course, using paging is much faster, you can choose Client paging and compare rendering times with the grid without paging. You can test features like sorting, filtering, grouping, column hiding / showing, column moving, print, export and so on, in such large table. In bottom debug window you can see the times spent by provided actions.

This example shows using editable, sortable and calculated TreeGrid with very large tables with more than 50,000 rows.
For navigation you can use vertical scrollbar, mouse wheel, arrow keys, PgDn, PgUp, Home, End, Tab.

Average count of rows in page. For client paging there are all pages created to contain this number of rows (except the last).
For server paging it determines height of page - it is default value of Count attribute.
Exact count of rows in pages can differ due to adding or deleting rows or in last incomplete page.
This value is returned as part of result of count ( ) function in formulas.
Every page must contain at least one row or is deleted. Exception is when grid does not contain any row, but must contain one page.
In TreeGrid server is this parameter used to set count of rows in page.
For large tables (> 50 000 root rows). Set it to default value of 100 to speed up rendering of large tables. Bigger value speeds up initial rendering, but can slow down TreeGrid usage and vice versa.