TestComplete freezes

Hello. We have DataGridView objects within tabs (TabControl ClrClassName) of a WinFormsObject.  These Grids are dynamically populated based on actions on other tabs.  When the Grids have a small number of Children (eg. < 2), no issues.  However, TestComplete freezes when working with larger Grids (eg. > 2 rows).  If I manually refresh the Form/tabs, Grid(s) will return to their initial, unpopulated state (fails test of course), but TestComplete unfreezes.  Any thoughts?