While loading 400 items in gojs myDiagram.model having different nodeTemplateMap,node Style and shape Style
taking too much time to render and get unresponsive script on Firefox and IE-11
400 isn’t very many, so I’m guessing that you are using LayeredDigraphLayout. Does everything look good and behave well once the diagram eventually appears? (Assuming you allow it to complete.)
Please read GoJS Performance Considerations -- Northwoods Software for more discussion about initialization performance problems.