Followup testing. Minimizing dashboard content for processor, network interface and airflow seem to have an effect on maintaining low ram usage. I intend to now go back enabling one by one to see what effect it has. I'll also note I'm using Firefox 140.0.2.
Still experiencing this on 7.1.4. Tab is left open, but will go inactive. Switching to tab will often produce a sluggish page refresh. Just verified the tab was using 7 gigs.