GoToolDragging selects the object it move

GoToolDragging selects the object it moves. Sometimes it is not sutable, I make some heavy calculations on object selection and mooving looks not so smooth as desired.
Any advise how to get smooth behaviour?

Have you read the other recent topics on this issue? Setting GoView.DragsRealtime to false is certainly the easiest thing to do.
Depending on what those “heavy calculations” are, perhaps you could disable them in a custom GoToolDragging, and just do them when finished in an override of DoDragging.

Tnanks Walter!!! The second works perfectly.