Diagram getting slow to scroll after load for large data

Node Count:60,000
Edge Count:80,000

Note: Group nodes are also in my Diagram.

Diagram Sample:

Solid lines are probably faster to draw than dashed lines.

Have you implemented virtualization? That would slow down scrolling while improving the initial loading time.

I want to keep dashed lines as well,
No, I haven’t used virtualization in my diagram.

Do you think it would be possible to package this so that we could see it? You could send it by email (gojs @ nwoods.com). We would want the templates, and any diagram config, and then the data as a .json file or similar.