You may use dynamic loading when number of rows is big. GroupBy and drag-and-drop require all rows to be rendered so it impossible to use them with dynamic loading.
“you may use dynamic loading when number of rows is big.”
what is usually big when people had to use dynamic loading - 100, 1000, 10,000 rows?
I understand it varies by app and size of row - but generally what are users finding in their experience for an internet based app?