I've had success disabling fast move drag from within worldDraw using AcGiCommonDraw::context()->disableFastMoveDrag(). When attempting to remove the individual calls from worldDraw with the following code called during kLoadDwg...
AcGiContext* pContext = acdbSetDefaultAcGiContext(NULL);
pContext->disableFastMoveDrag();
acdbSetDefaultAcGiContext(pContext);
... but the context passed into subsequent worldDraw calls does not have fast move drag disabled.
