I would like to propose a feature request to temporarily turn off the configuration preview when making changes to cards.
I find that while making small changes to my cards, if the script is large enough, the preview will bog down my workflow because it has to reload for every change. Sometimes this locks everything up and I am waiting for it to catch up before I can continue with my changes.
I would like to recommend that this feature be added the card configuration as a selector button next to “show visual editor”. I think this change would allow making minor changes to large scripts much more efficient.