Splunk dashboards start searches before I can configure them

Taking the Evergreen Dashboard as an example, I rarely want to see the default timeframe. I might also prefer to see the staging dashboard instead of the prod one. However, as soon as I load the page it immediately starts all the queries and the page is barely responsive until it's mostly finished drawing all its lines.

Maybe there could be a button to start the queries after I'm satisfied with the parameters? Or at least a stop button to abort the queries in progress. Or both?