Hi Aleksey

I isolated the problem, mainly happen when I am executing the function requery () inside the both beforerowcolumnchange and afeterrowcolumnchage events of a grid.

The degradation occurs when I move in the rows of the grid.

IF vr_history_invoices.unico <> vr_history_invoice_details.invoice_uq
   requery('vr_history_invoice_details')	 
  THISFORM.pestaña1.page4.gridInventory.detalle1.REFRESH()
ENDIF

Another thing that I don't understand is that when I execute any screen the first time delays in charging the cursoradapters, but the following times is very fast. The same way, if I insert, edit or delete a record, the first time is slow, but the following is very fast. Is there any propertie to change this behaivor?. or exists a cache memory?...

Thank you for your time

Carlos Miranda
MVP Visual Fox Pro