Curious which browsers people might be using for Panorama. I find Edge becomes too slow, Chrome I have issues where all of a sudden I can't scroll to the bottom of the rule base especially if you expand the zoom greather than 100%. With Firefox it gets slowed down as some of the scripts run long.
I'm running a VM version of Panorama(8.1.5) on ESXI. The VM has 8 VCPU's and 16GB of ram.