If not live, then a static view is fine.
What's more important than the visual presentation is a breakdown of the statistics of the CAPACITY (bytes/MB/GB/etc.) That's passing thru the SIEM both overall and by individual data source.
Is there a window, view, or option like this?
pertaining specifically to version 9.5.0 mc 5
SIEM performance really is better measured in events per second (EPS) than bandwidth. There is a view under: "McAfee Event Reporter | McAfee General Views | McAfee Collection Rate – Events Per Second" that shows this data.