GNS3 NodeItem grid.patch

diff --git a/gns3/items/node_item.py b/gns3/items/node_item.py
index c6c7be3..2fa0aef 100644
--- a/gns3/items/node_item.py
+++ b/gns3/items/node_item.py
@@ -377,6 +377,10 @@ class NodeItem():
         :param value: value of the change
         """
 
+        if change == 9: # Unsure but seems to alternate between 0/9 while dragging
+            GRID_SIZE = 75
+            self.setPos(float(GRID_SIZE * round(self.x() / GRID_SIZE)), float(GRID_SIZE * round(self.y() / GRID_SIZE)))
+
         # dynamically change the renderer when this node item is selected/unselected.
         if change == QtWidgets.QGraphicsItem.ItemSelectedChange:
             if value: